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cmos checksum error defaults loaded

Question: cmos checksum error defaults loaded

Last night I put together a new machine. I took the hard drive from my old machine and put in in the new machine. I then booted up and got the error "cmos checksum error defaults loaded". The machine would then take me to the screen asking what mode I wanted to run Windows in and when I chose a mode, reboot itself.After browsing through forums I came to the conclusion that I needed to reload XP on my new system machine because it finding it on the hard drive. When I cam home from work today to do so, the power supply wasn't working. The lights on the motherboard work but nothing else happens when I try to power on the machine. Below is my system. Thanks!!DFI LANPARTY UT nF4 SLI-D Socket 939 NVIDIA nForce4 SLI ATX AMD Motherboard eVGA 256-P2-N443-LX GeForce 7300GT 256MB 64-bit GDDR2 PCI Express x16 Video Card AMD Opteron 150 Venus 2.4GHz 1MB L2 Cache Socket 939 Processor Kingston ValueRAM 1GB (2 x 512MB) 184-Pin DDR SDRAM DDR 400 (PC 3200) Ram

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Preferred Solution: cmos checksum error defaults loaded

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Answer: cmos checksum error defaults loaded

That machine needs a brand new shiny CMOS battery part # CR 2032...dis-connect all power before replacing it and take the neccessary anti static precautions...

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i need some serious help here, i admit fully i never touch any of my computers BIOS's. but now i have a big problem. i bought one of those new pc cases with fans in four different places. i spent the better part of the day carefully moving my computers motherboard ABIT KR7A-133, hooking up all the wires and ide cables.

i booted up the machine and then i saw AMD Ahlon 1.050Ghz and the following error message "cmos checkum error- defaults loaded' i pressed F1 and to my suprise the machine booted up normally. but now i have an athlon 1.050ghz before that i had an athlon t-bird 1.4ghz.

i need help in re-setting my computer back to 1.4ghz. BUT i dont dare touch these settings till i know it wount damage my motherboard/processor/memory.

the settings i have to alter is...
cpu operating speed
cpu fsb clock
Ratio (fsb agp pci)
Multiplier Factor

i hope some of these specs help
the cpu is an amd athlon t-bird k7...266mhz fsb it was set to 1.4ghz
the ram instaled is 3 crucial 524mb ddr pc2100 non-parity unbuffered dimms.
the vga card s the NIVDIA msi-geforce mx 440-T 64mb ramdac

if any other info is needed ill repost here on the same thread.
 

Answer:CMOS checksum error - defaults loaded...HELP!

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Get this error on boot up:

CMOS checksum error - Defaults Loaded

any ideas?

Answer:CMOS checksum error - Defaults Loaded

1. reset cmos see if that helps
2. go to the mobo site and load laest bios on to cd
3. flash bios

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Had this happen on booting up this morning.Pressed F1 and the clock had reset to January 2004. Reset the time and date then rebooted, all was OK.For sometime now if the weather is cold, the clock has lost time.I presume that the MOB battery is to blame. The board is a Gigabyte GA-7DXR.Have looked in the manual but it does state the battery specification.Is this a serious problem i.e. the BIOS could revert to the defaults ?

Answer:CMOS Checksum Error - Defaults Loaded

Ive had this problem as well I don't know what it is to be honnest, perhaps someone will elighten us!

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Hi

What does this error mean ?"CMOS checksum error - defaults loaded"

Can anyone help why this error occurs?

I 've removed the battery on the motherboard and it worked well . , But again there was the same error.
F 1 and F 2 keys do not work.

thank you

Answer:CMOS checksum error - defaults loaded

This article may be able solve your problem ..

How to Fix Windows Cmos Checksum Error

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Hello all!
I regularly have the folllowing line appear when my bios starts up -CMOS checksum error defaults loaded. I am having a problem about CMOS Checksum Error, every time I turn on the computer it will wait about 30 secs before the first beep. Then the CMOS checksum error occur. Some days ago I had changed my battery after that this problem occurs. Please help me. I have a snapshots of the same problem.You can check here: http://wealthamplifier.in/images/cmos1
 

Answer:CMOS Checksum Error - Defaults Loaded

Could you have installed the battery backwards by mistake? Even though the battery is new, it could be defective.
 

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so I?m playing video games all fine I go to school come back and I turn on my pc. I get an error on screen and it says ?press F1 to continue, DEL to enter SETUP?. The only problem is, I can?t press F1. My keyboard (Razer Blackwidow Chroma) does not light up nor do my headphones or mouse (all Razer Chroma I?m a fanboy sorry) even tho they are plugged in. I thought they had stopped working so I plugged my headphones into my PS4 and they worked and lit up just fine even plugged them into my Mac. So it?s not that, but I literally cannot press F1 or del it?s as if my keyboard doesn?t work when I plug it into my PC. It says ?CMOS checksum error - defaults loaded? not sure what that means, I googled it and it has something to do with a battery, but I?m actually lost. I need help. Pls. I?ve included a picture but I?m posting on my iPhone so I?m not sure if it will work.
 

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Dear all.

When i start my pc it's says that cmos checksum error - default loaded. press F1 to continue or del to goto setup.

hear are the issues
=====================================
1. when i press f1 and start sounds will not detect.
2.Before 1 month ago i was used to press del and goto bios setup and save alla de details and start the pc. After i saved it machine will restart and work perfectly. sounds also detect. But now when i go to bios setup and save and exit, it want restart. pc have the power but nothing will loaded.

now even i cant restart the the pc. after restarting nothing will display.

Solutions i have got
================================
i have all ready replace my cmos bettery - CR 2032. But still have the problem.

if someone know about this please help me. this is a big trouble to me

my mother bord type is FOXCON G31mx series

thank you

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While booting up this computer with w98 I get the :

Keyboard error or no keyboard present
CMOS checksum error- defaults loaded

I dont know how to check the battery or how to even find it or is this a symptom of a failed or failing motherboard?

is there any way to test things since I do not have a keyboard operable or is there a way to check the battery or bios to see what it is. remember I have not got a clue how to start so I will need step by step instructions
 

Answer:CMOS checksum error Defaults loaded

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Help,I?m posting this in complete desperation. In over 10 years of assembling and modifying my own PC?s I have never once had this problem.I?m in the process of building a basic PC for my nearly ten year old son.I started with a fully working system comprising of a Gigabyte 8LD533 motherboard and Pentium 4 Northwood 2.4 GHz socket 478 processor in a generic beige box.From work I was given a snazzy HP desktop case with all the workings, except the motherboard had failed.All I have done is transplant the innards from the beige tower into the black HP and this happens.Boot up PC?one beep (Great!)?then the internal speaker connected to the motherboard goes berserk as soon as it reports the memory frequency of 266 MHz.It then reports the drives inside the machine then comes up with what I am beginning to think are the terminal words ?CMOS checksum error ? Defaults loaded?Whilst all this is happening pressing F1 or DEL does nothing so cannot enter the BIOS to correct the settings.In the end the PC just turns itself off.So far I have:-? Replaced the power supply.? Tried 4 different CMOS batteries.? Tried 4 different sticks of memory.With no effect.The only thing I can report is that the lights do not come on on the keyboard. I will try tomorrow another PS2 keyboard.All help much appreciated as always.Thank you,Michael Clare

Answer:CMOS checksum error – Defaults loaded!?!

I'm guessing you have damaged the BIOS .Do you have a BIOS 'short jumper'?Normally located near the battery,it will be 3 pins with either 1 & 2 or 2& 3 connected.Whichever it is reverse the jumper (i.e. if you have 1 & 2 connected, change it to 2 & 3).This will discharge the bios, and reset it (provided you have not damaged it)to factory defaults.You could try starting it in the reverse position, some boards will start others will not.Leave it in the reverse position for about 2 minutes before switching back to normal. Have a lok at this page for suggestions. click hereTerry

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Hi there people!

Again, abusing you with some doubts... basically, I replced my old CR2032 MoBo battery in my desktop with a new one, 4-5 weeks ago, more or less, the old one was dying (date not being displayed correctly)... but recently, 2 days ago, I had a power down (light went off... god damm CFE) and then a fast light return-off... fortunately, I use a regulator, so if it doesn't get enough power to enable power on for my devices, they won't turn on...

After that, 2 days after, I'm getting this nasty error when loading my PC... saying that CMOS checksum is bad, default configurations are loaded... also says something about the processor speed incorrect, but that is corrected when "defaults loaded", at least I suppose that.

I need to be sure that my MoBo is not dying (PLS NOOOO!!! ) My devices are recognized properly and I don't get any OS problems so far...

Thanks in advance for your help people

See ya!!!

Answer:CMOS bad checksum error - defaults loaded... ?

hello..
when you startup, is it display that's your cmos checksum is bad.
try to check your battery,anyway default of the battery for PC is 3V. least of the 3V the battery is bad.
but if you get the battery is 3V, so try to put up and put in again to reset the bios. and then startup again, set up the date/time. see what you get.

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So I know you shouldn't do this (and I'm gonna stop from now on) but I've been shutting down my PC by holding the power button and not shutting it down properly - and I think this is the reason for my problem.

A few days ago I started up my computer and then after I had been on the internet for a while it just rebooted itself. So I kept starting it up then when everything had loaded it just kept rebooting.

Now it doesn't even load up it goes to a black screen that says something about CMOS checksum error - Defaults Loaded. I've searched for other people with this problem and the responses tend to be to do something with the BIOS (sorry, I'm not very technical. I don't even know what the BIOS are) but my problem is my keyboard has now become unresponsive that I can't get it into anywhere to change the settings. When I start up all the lights come on for a second (num lock, caps lock and scroll lock) but then go off and my keyboard becomes unresponsive.

Then when I try to reboot the computer from the power button it doesn't even start up now! (It's just going from bad to worse) Like it turns on (I think it's the fan that makes a noise?) but nothing happens the screens black, it doesn't even make that beeping noise it usually does when it's just starting to start up. I have to wait for a while (like a good few hours or even a day) before I can try and start it up again and it will go to the CMOS checksum e... Read more

Answer:CMOS checksum error - Defaults Loaded

Might be your powersupply.

I actually had the same probablem and i sorta fixed it. Normally when you first see the problem you will get a advanced bootup screen giving you the option to go in safe mode normal mode and theres another option that says us your last working bootup setup or something like that. You want to press that butten and if that doesn't work you will have to put in your windows CD (assuming your using a windows computer) and boot from the CD and go to your recovery console, and do some commands. you will need to tell me your Cmos (or bios) settings command like mine is F8 (or the screen that shows you the "Press F8 to get to Bios setup" or "Press Esc to set boot device" ETC...
 

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What does the error means? Why does it appears momentarily after powering up the computer? The BIOS does stay at where it is configured but as soon as the main poweer is off, the BIOS simply reset and the CMOS Checksum error - Defaults loaded appears. Sometimes it simply went into questioning about the play and play OS.
Some questions. Should the plug and play OS be enabled or disabled? It appears to be enabled by default.
Is reseting CMOS simply remove the coin battery for 30 seconds?

Answer:CMOS Checksum error - Defaults loaded

Usually removing the battery will reset all to default. Depends on the board. Some specify removing the battery before changing the cmos jumper to the reset position. You move the jumper to the reset position for about 15 second then replace to original position then replace the battery and reboot. First try another battery. If that doesn't help try another cmos chip if its replaceable on your board. If that doesn't work the board probably has a fault. Plug and play is usually disabled.That allows windows to set parameters. Thats pretty much the drill for Asus boards. I have an ASUS A8N SLI-PREMIUM with the same problem. Just have to leave the mains supply on as much as possible. More of an annoyance than anything. But indicates something is amiss with the board. Other than that it gives no problems. Good luck mate !

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Hello all!
I regularly have the folllowing line appear when my bios starts up -
CMOS checksum error - defaults loaded.
It seemed to start happening when i downloaded spybot search&destroy. I have since removed the program but still have the problem. I have changed the cmos battery on the mobo as recommended in other threads, but it still regularly (every few start ups) happens.
Any advice to solve the problem?

The board is only six months old. CPU and RAM test fine. I have two hard drives, non raid, sata connection.
 

Answer:CMOS checksum error - defaults loaded

when i started reading ya post.. i thought at the cmos battery too. the message from cmos happens because the cmos has been reseted. this ussualy is done or by removing the battery temporarily... or by a jumper on the board.
you replaced the battery so this isn`t a problem anymore.
maybe the battery isn't fit correctly. or the jumper is not correctly set.. and periodically the contacts are touched. you should check both .
it this fails.. is a motherboard problem... the cmos information is lost due to power lost from the battery that powers it.
 

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Had this computer for about 4 yrs. Got message above for 1st time today.Seems ok after prssing F1. Using AMD 2000,256ram,80g HD, XP pro, Soltek M/B (I think). Checked archives for tips but could anyone confirm for def. what this message means. Also this week 2 "dicky" starts ie no display on screen. Should I keep an eye on this?

Answer:CMOS checksum error - defaults loaded

Try replacing the CMOS battery.

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I keep getting the above message on start up, I can hit F1 to continue or del to go into setup.If I hit F1 windows boots up normally or I can go into BIOS and reset factory defaults and then boot up normally, either way the pc date and time are wrong.Is this likely to be the CMOS battery ?Or can anyone advise?AMD 2200, 512MB DDR, WINDOWS XP PRO, thanks

Answer:CMOS checksum error Defaults loaded

Most likely the motherboard battery. A new one will only cost a couple of and is easily fitted. Have a look in the motherboard manual.?

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Hello,
I hope that you can help me with this problem-  which is outside of my experience.
 
Out of the blue my PC failed to boot.  Its OS is XP Pro.
 
It proceeds t boot as usual but then it hangs on the message ' Verifying DMI pool data.  Update success'   That's it.   There's a blinking cursor below that but it doesn't respond to the keyboard.
 
It halts there no matter what I try-  for instance tapping F8, the Gigabyte mobo safe-mode key, or even attempting to boot with the OS CD in the CD drive.
 
I thought it might be that the MOBO battery had died as I haven't used this machine for quite a while.  I changed the battery and I briefly saw the message ' CMOS checksum error.  Defaults loaded ' but that hasn't reappeared.  ' Verifying DMI pool date.  Update success ';  is as far as it gets.
 
Any clues ?  Short of sticking in a new hard drive I can't think where to go from here.
 
Regards

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hi there can someone please help me i have got a error message that comes up as the pc is booting up,
cmos checksum error defaults loaded
i have replaced that cmos battery with one thats is out of date in 2016
and have reset the bois time,
but i still get the error message and the pc keeps forgetting the time,
i hope some can help this is silly.
cheers t4lor.
 

Answer:cmos checksum error defaults loaded

could it be the cmos holding that is sodered down to the mb? this has happened to me before.
 

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Do you know that a defective/faulty mouse can affect your windows and cmos settings? This is base on my experience having this kind of trouble.

Specially for those who cant go to their cmos/bios settings. Don't suspect that it is your keyboard thats having a problem.

If you are experiencing checksum error and done everything you have searched the internet.... (especially changing your battery, which is always what i have read) try unplugging just your mouse and try to use the keyboard only to enter setup... if this works, then the problem is your mouse. Try changing it to a new one.

Hope this helps other people a lot.
 

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I found this error when powering up when I returned from Easter Break. I have since found that I needed to replace the battery - which I have done. I am still getting the error - what do I do now?
 

Answer:[SOLVED] CMOS checksum error - defaults loaded

After you replaced the battery, did you enter the bios setup and reset the options to your machine. Reset the hard drives, etc.

Then save and exit
 

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On boot up two errors come up
Floppy disk(s) fail (40)
CMOS checksum error-Defaults loaded
I press delete to enter the bios to find that the date has been set 1st Jan 2001 and 1st boot device set to Floppy. I reset the date,set 1st boot device to CD Rom as i do not have a floppy drive. Then save to CMOS and boot up continues fine, even restart is ok. But when i shutdown, switch off and then switch on & reboot the problem reoccurs.
I have recently reinstalled Windows XP Home & Updated The Bios. I am using ASUS A7N8X-X Bios Rev 1009.
Any ideas on how to overcome this problem would be appreciated.
 

Answer:Solved: CMOS checksum error-Defaults loaded

Try a new CMOS battery and if that does not help solve the problem please post back.
 

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Hi there, I was hoping someone may be able to shed some light on this as it's got me completely stumped, and pretty down at the same time if the truth be told. I'll outline the problem below although the title of the thread may actually be slightly misleading.

My system is as follows:

ASUS M2A-VM Motherboard
Athlon X2 Dual Core 5000+
4gb DDR2
250gb primary SATA HDD
500gb secondary SATA HDD
Windows 7 Professional 32-bit

I thought I'd buy me a USB3 expansion card (transcend TS-USB3) to take advantage of the speeds my new external HD would handle. It was a five minute install putting it into the PCI-E slot, but when I turned my PC back on I got the CMOS message in the title of the thread. I continued into Windows with no problem but noticed my clock and date had gone completely out of whack. I corrected that but then had trouble installing the drivers for the card. I rebooted the PC only to get the CMOS message again, so I had a nose at my BIOS settings where everything seemed fine.
I booted back into Windows and re-downloaded the drivers from Transcend's website. They installed this time with no problem, and the PC picked up my new external HD. Then I noticed the real problem; as I went to start moving files from my secondary HDD to my external HD, the secondary HD had disappeared.

I've unplugged the HDD and rebooted to no effect, I've checked the BIOS and that sees it, I've even disconnected the USB3 card and rebooted to no effect. I just can't get the PC (just Windows by ... Read more

Answer:CMOS Checksum Error Defaults Loaded: Post Transcend TS-USB3 Install

A couple of pertinent pieces of information to add to the OP. I forgot to add that the Checksum Error has completely disappeared, it only happened three or four times but Windows boots normally now.

Secondly, the USB3 card is now working again and the external HD is detected and working perfectly. I just can't figure out for the life of me how to get Windows to see the secondary drive again.

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On startup, my computer gives me the CMOS checksum error- Defaults loaded. I can press f1 to continue and DEL to enter setup, but my keyboard with a ps2 connection has partial control with only the delete, escape, scroll lock, and numblock keys working, at least to my knowledge. I can press delete to get into the bios, but i cannot control anything from there. I have also tried another keyboard with a usb connection and got the same results meaning that the problem does not lie with the keyboard.To fix the problem, i have replaced the bios battery and also reset the CMOS using the jumpers. This obviously didnt work as i would not be posting this. I know that if i can somehow communicate with the bios, i can set it to stop "halt on error".I am currently using a p5n- d ASUS motherboard and from what ive read my other specs shouldent be necessary, though if you would like them i will gladly provide them.Please offer any suggestions before I consider replacing the motherboard.

Answer:CMOS checksum error- Defaults loaded on startup, partial keyboard control

Stop fooling with the keyboard or you will damage it. The default settings for your motherboard gos for the standard PS/2 keyboard.Don't use a reset switch, if you system has one. You must power off fully and power on to start the BIOS power on self test.Make sure you put the battery in the right way. The right battery is a 3 volt battery.

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Considering I wasn't paying attention to where I was I had posted this earlier, I'm reposting this thread, where I can possibly gain more help from.

I had an old motherboard/cpu combo that has been acting up for sometime it seems, only until recently it just completely crapped out. I bought a new motherboard/cpu combo, Athlon 64 - ECS 755-A2 & Sempron 2500 CPU. After installing it and hooking up 1 of 2 harddrives, the CMOS error came up. I looked online for help and saw to replace to the battery, which I did. That hasn't helped at all considering I've changed the bios while having both hd's installed 1 at a time or neither. After I change the BIOS, the error no longer comes up, but the initial windows error comes up saying improper boot or something, asking how to boot, Safe mode/network/command prompt or last known config. After trying all possibilities, all it did was try to load with no attempt. The winXP loading logo doesn't even show up, it just reboots automatically.

There is no unstable power (I've monitored it under the BIOS), the temperature is keeping around 32 C degrees, no electromagnetic problem. Am I able to change the CMOS memory chip myself? I have yet to scan for a BIOS virus considering it's very hard for me to hook my computer up to someone elses to do such a task but I'll try and eventually get back.

Please help, no idea what to do. If the motherboard is bad, I should be returning it then ... Read more

Answer:CMOS checksum error - defaults loaded. (repost, read all past posts & nothing works)

ecs boards are known for thier crappiness and poor reliabilty, as myself and numerous other TS members know personally. usually this problem is caused by the motherboard anyways, but given the fact that you have an ecs i'd say they you can conclude that this problem is baing caused by the motherboard.
 

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I  had an amd Athlon  given to me I was told that the cmos battery had  gone when I was given it and after I got another drive to put in it . it wont boot past checksum defaults loaded , I understood this to mean the battery so I have replaced it but it still only goes as far as the same error message , it will not let me enter the bios  am I looking at major motherboard failure ? please anyone advise

Answer:please help have cmos checksum defaults loaded

Please provide model number of the main board, if you can. Or the model number of the computer.Also, what is the exact error message? One of these?    BIOS ROM checksum error    System CMOS checksum bad - default configuration used    Press <F1> to resume, <F2> to Setup    CMOS Checksum Bad    Press F2 to Run SETUP    Press F1 to load default values and continue    CMOS Checksum Error - Default loadedOften thee is some option to confirm and enter BIOS.

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Hi,

I have an older PC which I gave to my mum. It originally ran Vista, but I bought and installed Windows 7 Ultimate around 6 weeks ago after it had been inactive for 3/4 months. It was running great, but a couple of weeks ago it just started hanging for no real reason. Also, at startup it would say that the computer had not been shut down properly, even if it had. This was only when it was switched off at the wall, not after a restart or when the PC was left plugged in and switched on. She only uses the PC to look at You Tube and some webcams from her grandkids, and that's it, she's not very computer literate.

Initially, I left Windows repair to run overnight, but when I looked at it the following morning it was still in the repair screen, so I assume it had hung. I spoke to a local repair shop and they suggested I test the RAM, test the hard drive, and replace the CMOS battery. The RAM and hard drive checks went without any errors and after I replaced the battery the hanging stopped. I played with the computer all evening and shut it down as normal and switched it off at the wall. Next day I thought I would start it up just to check it and I was faced with a "cmos checksum error - defaults loaded" message. I thought that was strange, but maybe the battery was dead, so I swapped it over with one from my perfectly working desktop to try it out, and my desktop worked fine, but after shutting down my mum's one it had the same problem when power was p... Read more

Answer:"cmos checksum error - defaults loaded" after battery replaced

I must add that the PC is the same as when I bought it new from the shop, except for adding a Creative Labs sound card (approx 2012) and installing Windows 7 (around 6 weeks ago). All Windows updates are downloaded and installed.
 

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When I boot up my computer,a black screen shows up and says-

Code:
"CPU checksum error-Defaults loaded
Warning!CPU has been changed or CPU Ratio changed fail
Please re-enter CPU settings in the CMOS setup and remember to save before quit!"
and asks me to press F1 to continue and press 'del' to enter setup.

Seeing this error my vendor thought that the problem was with the CMOS battery and without hesitating he replaced it.But even after this step being taken,the problem is persisting.What's wrong with my PC?Where lies the problem?
Please help!!!
 

Answer:CPU checksum error-defaults loaded

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Mobo: ASUS M2N-SLI Deluxe AM2 NVIDIA nForce 570 SLI MCP ATX AMD
(Out of the box, arrived yesterday)

video card: Nvidia 7900 GS (new 4 months ago)

PSU: Apevia 680w Beast Power (new 4 months ago)

Ram: 4gigs G.SKILL (4 x 1GB) 240-Pin DDR2 800
(out of the box, arrived yesterday)

HDD: WD Raptor (2 years old)

CPU: AMD Athlon 64 X2 4600+ Windsor 2.4GHz Socket AM2 89W Dual-Core

Processor
(Out of the box, arrived yesterday)

Bios: Award Bios (Old mobo, and new)

________________________________________________________________

Ok so I upgraded my computer with a new mobo, cpu, and ram and now im getting some weird errors. When I start the computer, the "AI" mobo logo screen comes up. After it passes that screen it comes to the bios screen where it checks everything. at this screen, it will detect my sata hard drive but not the IDE hard drive, and then it gives me an error "Checksum Error - Defaults Loaded" and it says Press F1 to continue. so I do and then it comes to the next screen which says "http://www.Jmicron.com" "Detect Drives Done - No Any Drive Found". It wont pass this screen. Is there something in the bios I set wrong? or maybe its a dead hard drive? I have no idea what to do at this point. Any suggestions?
 

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CMOS CHECKSUM ERROR - DEFAULT LOADED
Every time I Start my PC i am gettin this error,, i have replaced the battery and stil the prob persists, even the time/date gets reset to 12.00AM ... please help
 

Answer:Cmos checksum error - default loaded

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When I start my computer it goes throught the setup and memory check, then I get the "CMOS: check sum error/defaults loaded." The thing is it wont allow my keyboard or mouse to operate, it's as if no power at all is going to either, no lights on keyboard, nothing. It also makes the fast clicking noise it makes when doing the memory check. I hope someone can help me. :-/

Answer:CMOS: check sum error defaults loaded?

Your CMOS battery may be depleted. Replace it. See This article for more information on the CMOS checksum error.

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I am having trouble correcting this error. A friend of mine asked me to look at his computer for him. He was using it one day and it just shut off out of know where. It would not start again. I discovered shortly after looking at it, that the PSU had to be replaced. I proceeded to buy a new PSU and I installed it. Everything started just fine. However, when I get a CMOS Checksum error. I can press F1 to continue or DEL for setup. I hit F! and it proceeds to detect array under "NVIDIA RAID IDE ROM BIOS".
It does nothing after this. I tried reinserting the CMOS battery, I loaded factory settings on the BIOS ( RAID is OFF), but still it does nothing. Any help would be appreciated. I have to get this computer back to him soon.
 

Answer:Solved: CMOS Checksun Error-Defaults Loaded

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I have a Dell Zino HD media desktop, and it all of a suddent showed this error on booting up:
CMOS checksum error, F2 to Run SETUP, F1 to load defaults 
 

The thing is, I can't get it to move past it. I've tried 3 different keyboards, many restarts, and nothing gets it to move past this screen.
How can I overcome this?

Answer:Dell Zino: CMOS checksum error, F2 to Run SETUP, F1 to load defaults - Can't Move Past the Screen on Start Up

Unplug the system and hold the power button for 30 sec.  If that doesn't get the system to POST, the BIOS/CMOS is corrupt - replace the mainboard.

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I get this message when I boot up, CMOS failed-loaded defaults, then it asks me where i want to go-
F5-continue, or Del to go to BIOS.
Do I need too worry.
Have never adjusted my BIOS as that is an area where I am not too clued up.
Just checked my motherboard manual and compared it to my BIOS when i got my pc, everything seemed in order on default.
Please help.
Thanx
 

Answer:Solved: CMOS failed????? loaded defaults

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Got a Emachine Vista Home
checksum error Defaults Loading was the message I got
Changed the battery over and still the same
The strange thing about this is no matter what I go into
f8 f2 f1
It shuts down but there is no errors or beeps or blue screen
I timed it and the pc stays on for 2m 30s and then dies
I'm totally baffled with it

Answer:checksum error Defaults Loading

Most likely overheating,
Unplug from the wall and open the case.
Clean it out. Check to see if all fans move easily (without plugging in).

Plug in (with case open) and run until it shuts down.
Unplug from wall
CAREFULLY feel around near the components (DO NOT touch them - you can burn yourself!) to locate the hot components (don't forget to check the PSU)

It's gotta stay on longer than a couple of minutes in order to run diagnostics .
For the checksum error, go into the BIOS, set the date, then save the settings before you exit. Does it still give the checksum error the next time that you reboot?

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I have an old 'puter that I am trying to get going. I hooked it up and it starts but after inital start, I get a cmos checksum error. I have replaced the battery, Un hooked all componants incase they might be bad and installed my own hard drive with win98se and it still does not work.  F1 will not let it continue and Esc Does not work ether.  Is there hope? or do I slam dunk this thing?

Answer:cmos checksum error

Follow this sequence http://www.computerhope.com/issues/ch000239.htm

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getting above message when i start machine. (says press del to enter setup or F1 to continue but nothing happens).

Answer:CMOS checksum error

Sounds like a dead battery - can you change any settings manually?

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I dont know if its bad luck or what but the past 3 mother boards had problems and I had to send them all back. This is my 4th and now when ever I turn on the darn thing is comes up with "CMOS checksum error". This is really agrivating me I did a cmos reset with the jumpers, still didnt work. The mother board bios do reset (i think) but it still comes up with that error. The only time where I can skip that error is when I go into the bios and hit the "Load Fail-Safe Defaults" and "Load Optimized Defaults". But then still I will try to run xp and it just restarts at the xp loading screen. Can someone help me please I feel like throwing my machine off a cliff.
My set up is-

ABIT GD8 Socket T (LGA 775) Intel 915P ATX Intel Motherboard
Intel Pentium 4 630 Prescott 800MHz FSB 2MB L2 Cache LGA 775 EM64T Processor
Thermaltake TR2 W0070 ATX 430W Power Supply 115/230 V
Radeon X800GTO 256MB 256-bit GDDR3 VIVO PCI Express x16 Video Card


Do I need to update the BIOS maybe? Thats my only guess.
 

Answer:CMOS checksum error!!

that should have been the first thing to do . now did you check the web site that built your board and does it have that cpu listed ?
 

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Sometimes, when i turn on my computer, i get the error: CMOS checksum error - defults loaded. It has only started happening recently, and it's become quite frequent. It resets my time, and it's rather annoying as i have to keep setting my time i turn on the computer. Other than reseting my time, i'm not sure what else it does.

I've read on the internet that it my computer battery running out. If it is, how can i make sure because i don't want to get a new battery for no reason. I'm hoping it's something like a faulty setting i've made, or a virus as i can remove it without having to spend money.

So does anyone know how to fix this error message, and if it's my battery, how can i confirm it?
 

Answer:CMOS Checksum error.

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I shutdown my compy, flipped the PSU power switch, and swapped out hard drives. When I booted it up everything went normally and I saw the Windows 98 (heck yes) splash screen before turning around. When I turned back it was stuck at a black screen, so I hit the reset button. After that it wouldn't get past the memory testing in the BIOS. I turned it off and swapped the hard drives back, but when I turned it back on it still wouldn't get past this (after mem testing comes the IDE drive detection). After clearing my CMOS and booting back up it gave me a "CMOS Checksum Error" and I hit F1 to continue. I've reset the CMOS before and it has never done this. When Ubuntu loaded up I started surfing some pages before it hard froze. I worked some SysRq magic to reboot it, got back into Ubuntu, checked some logs, and found some network related daemon thinger was giving me some errors. I reinstalled it and everything worked fine after that. I haven't rebooted yet, though. So, here's my question:

Why?

Answer:CMOS Checksum Error

For one thing, anything can happen when running drivers written for another motherboard and video card.

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This is very frustrating, so I will start by saying that I just had my motherboard replaced by the warranty department of circuit city, where I bought my laptop. Before having the motherboard replaced, I was getting a "Bad CMOS Checksum Error" upon startup. A few days later, I tried to start up my computer and nothing was displayed on the monitor. This problem was not a backlight problem because that was fixed before also, so i'm guessing that replacing the motherboard was their fix for this. However, I just got my computer back and I am still getting this Bad CMOS Checksum error. I was told at Circuit City that they replaced my motherboard and updated my BIOS. But why am I still getting this error? I went into the BIOS and loaded the default configuration, but the error still comes up when I start/restart my computer. I'm pretty sure that the CMOS has something to do with the date and time that is held on my computer, so every now and then it acts like my Norton subscription has expired, but ends up noticing that it is not. Can my computer still run as normal with this error or at some point will it cause the motherboard to go bad again? Can someone please help?
 

Answer:Bad CMOS Checksum Error

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I've recently had a problem fixed by the volunteer LarryCore. I'm so impressed, I'll try to make it two for two.
The problem I have is a CMOS checksum error. Whenever I tried to start the computer, it would freeze before I even got to the sign in screen. I tried varied Support people, and narrowed the problem down to the Config.sys file. Within this file I further narrowed it down to a command called "Buffers=30". When I unchecked this command, the computer started up normally. When I checked it again, the system froze up again. So I've been running the computer with this unchecked. However, every once in awhile, the BIOS gets reset to default. I have to set everything back to use my upgraded graphics and sound cards. The computer still keeps good time, so I'm sure its not a battery issue. I hope this is enough information; let me know if there's something I missed.
Kusanage.
 

Answer:CMOS checksum error

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WinXP Home/SP2/IE7: On booting up I get this message: "Energy Star Phoenix Award Bios Version NAA21EM. CMOS Checksum error. Defaults loaded.
Warning! system is in Safe Mode. Please resetting CPU frequency in the CMOS setup. Press F1 or F2.....
I then press F1 and the pc starts normally. However, I am wondering if this message on startup has anything to do with a d/load and install from microsoft windows website to restore Internet Explorer icon to my desktop which was done yesterday.
How can I disable this message from appearing at startup? Thanks.
 

Answer:CMOS Checksum error!

Is it a desktop PC? It sounds like your CMOS battery has died and needs to be replaced. Easy on a desktop---not easy on a laptop.
 

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I received this error when I turned on my computer this morning. I pushed F1 to continue, and everything seemed fine. Does anyone know what this error means, and what I should do if I get it again? Thanks.

PS I noticed that the date on my computer reverted to 1/1/05.

Answer:CMOS Checksum Error

http://www.computerhope.com/issues/ch000237.htm

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HiI have a desktop PC running an AMD athlon 2400 with 1Gb of Ram and 300Gb hard drive (XP Home).FOr the past few weeks, on bootup, I have had a "keyboard missing" error. I have usually managed to restart the PC ok using DEL to enter setup and then continuing the bootup.This week, in addition to the keyboard error, a "CMOS checksum error" has presented and no amount of DEL or F2 to enter diagnostics will get it to start.Is this the beginning of the end of the PC?Many thanks, Sam

Answer:CMOS checksum error?

click hereI would try a new CMOS battery first...

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Everytime i run my computer, it will show CMOS CheckSum Error.. Press Delete to load default or Press F1 to enter setup... So what's wrong? After i logged in to my account, the date will change to December 30 2002... So i have to change it back everytime i run my computer..... Any Solution??
 

Answer:CMOS CheckSum Error...

The solution is to replace your battery in your comp.

I jumped when I read the title to your post! Oh boy! I'm actually get to use my former skills as an embedded system developer again! I used to be a high tech engineer and switched to being a comp tech during the high tech collapse.

Anyhow, CMOS is a type of memory. It stores values/settings for your BIOS between sessions. When the BIOS starts up it reads them from CMOS and saves them when it shuts down (or whenever you explicitedly save settings within BIOS) Now, CMOS is volatile memory, meaning that it's contents will be lost in the absence of power. That's why your comp has a battery. The battery kicks in when you turn off the power to the comp and recharges when you power on. But over time, batteries can lose their capacity, hence, your CMOS loses it's contents between sessions. The BIOS can only check the checksum of the CMOS contents to determine if something is wrong with the CMOS but exactly what caused the checksum failure, it can't tell. What tipped me off was that everything returns to default which means all the CMOS data was lost. That usually means the battery is dead.
 

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My brother and I recently upgraded our father's office computer to new system. Everything seemed to be fine but when we turned off the power of the surge protector, the cmos resets to the default. :confused It POST itself and go to the Windows desktop but whenever we shut the power off via the power switch, CMOS resets itself with CMOS checksum error message at the POST screen. We tried resetting the BIOS by taking out the battery and clearing the CMOS via the jumper and that did not work. BIOS is not the problem because it's up to date. Memory is not the problem because we replaced my pc 3200 DDR memory with my brother's and the result was same. :cry What would be the cause of this? My father is computer illiterate so we want the computer to be as simple and user friendly as possible. For the reference these are the specs:

Athlon 64 X2 3800+ Socket 939 (OEM New)
Asus A8N SLI SE BIOS version 5.02 (New)
Geforce 9800 GT XFX (New)
CoolerMaster PSU 650 Watts (New)
 

Answer:CMOS Checksum Error

Welcome aboard jhwyotech2k9.



My brother and I recently upgraded our father's office computer to new system. Everything seemed to be fine but when we turned off the power of the surge protector, the cmos resets to the default. :confused It POST itself and go to the Windows desktop but whenever we shut the power off via the power switch, CMOS resets itself with CMOS checksum error message at the POST screenClick to expand...

I have almost the same machine, A8N-E. I would change the battery as that mobo of yours is getting old. Your 5.02 BIOS is from 2006 and CMOS batteries usually only last some 3 years without power. Get a replacement( $3) and see how it goes. Let us know what happens eh? CR2302, you can get it almost anywhere that sells electronics.
 

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cmos bad checksum error press f1 , f2 f11 to setup....

have a pc that had 3 gigs of ram in it and tried to upgrade it to 16 gigs of ddr3 get message above. Its a MSI brd amd tri core cpu
 

Answer:cmos bad checksum error help

Load bios defaults and see if it boots correctly after that?
 

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Hi

I need help. Last night I was using my PC fine and suddenly it froze and gave me a blue screen indicating an error had ocurred in the system (dont really remember everything it said in the screen). Then I tried to reboot but it would just give me some beeping sounds and the screen wouldnt load up, so I couldn't get in the BIOS. Then I tried unplugging it and plugging it back up and after a couple of tries and changing some IDE cables around, taking out the CD ROM (only leaving my HDDs), the screen loaded, but it wouldnt boot Windows XP. I got the error "CMOS Checksum Error" and if I pressed F1 I'd go into the setup, if I pressed F2 I'd go and load up default settings. Well F2 didn't work cause the system wouldn't recognize any of my drives. I went into the BIOS setup and couldn't see my HDDs. I also saw that the date was set to september 2003 and the time was wrong. Tried switching them around, changing IDE cables, leaving just 1 master HDD, and nothing happened. Now it went back to just giving me beeping sounds and no screen. I haven't tried changing my CMOS battery yet, and I'm planning on buying a couple of new IDE cables just in case. Any ideas?

Just a note: In the past, when I would reboot my PC, it would not load up the initial screen and it would just give me beeping sounds, but after unplugging and plugging it again 3 or 4 times, it would eventually load up. Never have I received this "CMOS Checksum Err... Read more

Answer:CMOS Checksum Error

yups yeps sounds like a u should get new CMOS battery asap..
 

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hiwhen booting up xp i get cmos checksum error message and my keyboard and mouse dont work to get into the bios setup,having read all the postings here i changed the mboard battery but still the same mboard is AOPEN MX4LR with 756 RAM and p4 1.60 proc can anybody help please

Answer:cmos checksum error

Can you give more info please. Is this a fresh install? If so are you using a PS2 kboard and mouse.Have you also tried clearing CMOS using the jumper pin JP15 as described in manualand setting defaults in BIOS?

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Hi,

When I turn on the computer, it shows "Cmos Checksum Error" message on the screen. Even I have the cmos battery changed, it doesn't solve the problem.

When I try to enter to bios setup, the monitor loses signal, but the fans and everything is running.

Anybody out there know a fix? Thanks.

Motherboard: Foxconn 661M03
 

Answer:CMOS Checksum Error

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Hi,I have got a computer which says "CMOS Checksum ERROR - Defaults loaded" when it starts up. It doesn't say it every time it starts up, and is running Windows 98. Another error it sometimes throws up is "NEW CPU Installed".Does anyone know what this might be about and how I can fix it. I think it might be something to do with a battery near the processor on the motherboard, but I'm not too sure.Thanks

Answer:CMOS checksum error

Yes, the CMOS battery needs replacing.

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Hi all.PC will not start because the follow error message is on screen:F1 TO CONTINUE OR DELETE TO ENTER SETUPCMOS CHECKSUM ERRORWARNING: SYSTEM IS RUNNING IN SAFE MODEPLEASE RE-SETTING CPU OR MEMORY RATIO/FREQUENCY IN CMOS SETUP.I choose DELETE and I reset all defaults in CMOS SETUP.The PC then restarts and all is OK.After some hours, again the error returns on start-up and I have to repeat the above process all over again.ANY IDEAS?Regards..... Neil.

Answer:CMOS Checksum Error

Sounds like a dead CMOS (motherboard) battery.click here

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First of all, this is such a wonderful and helpful website. You all rock! Just by reading posts, I have received so much help/guidance. THANKS

Now, onto the reason why I'm going nuts. I am not an expert, but I have always considered myself fairly proficient in fixing computer problems, until now. I have a Elite K7SEM motherboard, a little less than 2 years old, and a CMOS Checksum Error that will not go away, despite changing the battery, clearing the jumper settings, and going over the BIOS inch by inch. My question is, besides resetting the time everytime I turn the computer on, can I go on indefinitely like this? Or, will the motherboard finally say enough is enough and just shut down on me?

Thank you
 

Answer:CMOS Checksum Error

You can run a motherboard without a battery all together. You may get less performance out of the system because the BIOS settings will be at default levels but it should work.

Now, its possible that the replacement battery is no good, I had it happen to me before. You can also examine the battery holder's contacts to make sure they aren't the problem. The jumper for clearing the CMOS must be set for Normal not clear, And you must enter the BIOS, load the defaults and adjust the settings to the desired, then SAVE and EXIT. Also if you've added any new hardware you may wish to remove it or check for BIOS issues/updates.

Might also be worth stripping the computer done piece by piece to see if its defective piece of hardware thats causing the issue.
 

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Even though the CMOS battery has been replaced, the computer, with a GA-7N400Pro mainboard, keeps showing a CMOS checksum error the moment I disconnect it from the power grid. It has done this ever since I first bought it and it has continued to function perfecty well over the years. What does this indicate? The CMOS is able to hold all information when left on stand-by voltage. Updated to the latest variantApproximately 2 years oldGigabyte will simply keep sending me new CR2032 batteries as they do not seem to fully understand my problem.

Answer:CMOS checksum error

I have an older Gigabyte MB that would (occassionally) do that. Reloading the chipset drivers from the Gigabyte CD (seems) to have stopped the problem. If you choose to try this, DO NOT load more than one set of drivers without rebooting. I had to reload the mini port drivers and the PCI bus master drivers.

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i just built a cpu and when turned on it says CMOS checksum error - defaults loaded press blah blah blah but won't let me in to fix the issueplus its reading i have a 1200 processor but its actually a 3000+ amdhelp plaese

Answer:please help with cmos checksum error

turn the computer off and open up your computer tower and look for the battery, try replacing your battery. if your computer is branded i suggest you call the manufacturer maybe it is still under warranty and you might still get a free battery.  

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Hi, I would appreciate it if anyone can help me. I just upgraded my ram from 512 to 1 gig and the computer did load in twice but now every time i turn it on it says Hi, I would appreciate it if anyone can help me. I just upgraded my ram from 512 to 1 gig and the computer did load in twice but now every time i turn it on it says CMOS checksum error and other times it says CPU is unworkable or has been changed. Please help as it is very frustrating . Is it bad ram or is it something else??? Please help :-( and other times it says CPU is unworkable or has been changed. Please help as it is very frustrating . Is it bad ram or is it something else??? Please help :-(
 

Answer:CMOS checksum error

Either a bad install, or bad components. What happens when you go bak to your 512 MB module. If good, run memsys86 on your new memory module.
 

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i open my computer this morning and the screen plushes the message"cmos checksum error".press f9 to enter configurationpress f1 to enter setup...but if i press any of the key...it does not respond..what should i do?

Answer:cmos checksum error

open your cpu casing,search for a small battery,change it with a new one.That is the cmos battery.Then, after installing the new battery, turn on your computer and go to bios setup by pressing delete during the startup, set your bios date and etc. 

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 (PIII 810e)CMOS CHECKSUM ERROR(everytime sets default and appears f1 to coun. del to ent. setup   were as chaged twice2. eighter mas. sl or sec. slave not detecting    

Answer:CMOS CHECKSUM ERROR.

Most likely cause is a deteriorating Cmos battery.See hereGood luck.

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New build pcAntec Sonata case and PSU ASUS A8N-E m/b AMD64 3000 2 x 512mb Crucial RAM 80GB Maxtor Sata 150 128mb Sapphire X700 PCIE card Terratec soundcard NEC DVDAfter getting help from the forum in sorting out the boot up problem I had click here all seemed well. Or so I thought.After sorting the boot up problem I switched the pc off at the mains. Didn't get to touch the thing again until today and got a CMOS checksum error on start up. So I went into the BIOS and reset the time, date and one or two other settings and restarted. All seemed well all day until I needed to switch off the power. On restarting I got the CMOS error message again.I took out the battery and moved the jumper to pins 2+3 to clear the CMOS. Restarted, reset the BIOS and all was well again. That is until I swiched the power off again. I must have reset the CMOS now a dozen times but each time the power goes off (even for just a few seconds) the CMOS message appears.I've taken all non essential cards/drives off the pc and even put a new battery in. But to no avail it seems. I'm now thinking that the motherboard is at fault, unless anyone can think of anything else.Apologies if I've missed any essential information out.Cheersslowhand

Answer:CMOS checksum error

Are you sure the Clear CMOS is in the run position

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Hello, everyone. I need some help I got brand-new va-10 mothervoard just yesterday, connected it and everything. While booting "CMOS checksum error - Defaults loaded" and "Press F1 to continue, DEL to enter SETUP" messages appeared on the screen. I chose DEL and corrected some of the set ups, BUT forgot to save the changes. On the next boot the same "CMOS checksum error..." message appears and computer freezes - keyboard does not work, pressing "del" or "f1" has no effect. I flashed the Bios sever times, but that didnot help. Any suggestions?

PS

I have a ps2 keyboard.
 

Answer:va-10: cmos checksum error

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I am rebuilding an old Abit KR7A. The problem I have is, I can get into bios from a cold start, but after making changes and saving, I get the no post (black screen, no beep, flashing monitor signal). If I cold boot it, I get "cmos checksum error. press f1 to continue or del to enter". I have switched memory, and installed a new battery. The CPU is reported correctly, but when I get back into bios, it hasnt saved anything entered and is defaulted. I have also removed the battery for several minutes. Any other ideas?
Thanks
 

Answer:CMOS Checksum Error

make sure the cmos reset jumper is set in right position.
 

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Hello friends, I need your help here. A friend's AMD pc running Win98SE has run into a problem. When the pc has been on for quite a while, sometimes the monitor just goes off and moving the mouse or pressing a key does not wake it up. It happened last night and I tried to switch off the CPU but I noticed I had to keep my finger on the switch for a long time before it could switch off. Then I switched it back on again, but just after the drive detection bit it gave an error message saying:CMOS checksum error - Defaults loaded.Press F1 to continue. I did that and it booted ok, but i dread the fault happening again. What exactly is happening and how do I correct this problem. Please help out. Thanks in advance.

Answer:CMOS checksum error

The CMOS battery has failed.

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Hello

what is a CMOS checksum error?

i just got one when i was rebooting, it then said that it was loading defaults?

why did i get it?
does this mean my mobo is going bad or my mobo battery is going flat?

Answer:CMOS checksum error

try reseating the battery. if that doesn't work replace it.

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Tried to boot a computer, and the message i get is;

CMOS Checksum Error - Defaults loaded
CPU was changed, please re-setting CPU information in CMOS setup

I am unable to enter bios as every PS2 keyboard i have tried has no power. I have also replaced the motherboard battery in hopes that would cure the problem, but nothing. I also thought about using the CLR_CMOS jumper, but this motherboard (Gigabyte GA-7NNXPV) doesn't have any jumper.

Any help would be appreciated.
 

Answer:CMOS Checksum Error

Matrox said:


Tried to boot a computer, and the message i get is;

CMOS Checksum Error - Defaults loaded
CPU was changed, please re-setting CPU information in CMOS setup

I am unable to enter bios as every PS2 keyboard i have tried has no power. I have also replaced the motherboard battery in hopes that would cure the problem, but nothing. I also thought about using the CLR_CMOS jumper, but this motherboard (Gigabyte GA-7NNXPV) doesn't have any jumper.

Any help would be appreciated.Click to expand...

Sounds as though that motherboard mught be shot to pieces. However, it's unusual for PS2 keyboards not to obliged at least with the Delete key at boottime. There are a few motherboards out there with keyboard and mouse sockets reversed - that it, mouse on the left as you face the back. Could this be one such, and are you not bothering to look when you plug in?

That said, "CPU was changed" is a strange message to see unless, of course, you have changed it. My money is still on a dud board.
 

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Recently whenever I unplug my computer and plug it back in, or whenever the power to my house goes out, it gives me a CMOS checksum error at boot up and resets the system clock and all the bios settings to defaults.

I read about the error and it seemed these errors are usually caused by a dead system board battery, but the symptoms for that sound like it does it every time you start your computer, which isn't the case for me.

Is it likely to be a dead system battery? Are they easy to replace?
Thanks!

Answer:CMOS Checksum Error

Yes this sounds like your issue and no their not hard to replace.

After opening the side of your case, look for something about the size and shape of a quarter mounted on the system board. Usually the battery sits under a tight clip and you can remove it by lifting the clip. Sometimes they snap into a socket and you have to push a little tab to release them. Most batteries are the CR2032. You can purchase these at a Walmart or Radio Shack.

After replacing the battery, start up your computer and press the appropriate key to enter the BIOS setup screen. (Usually it's the DELETE or INSERT key. Watch the screen for instructions or consult your manual.)

Set the system clock to the correct time, then save and exit. If your computer works normally now, you're all done. If it doesn't recognize one or more hard drives, go back into Setup and look for the hard drive "Auto config" or similar. Sorry, but every BIOS is different, so it's impossible to give more detailed instructions.

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Been on holiday, came back and PC would not start- dead - no lights. Whipped back off and afterf removing power plug from motherboard and then replacing it I got moving again. However, when I start up I get a checksum error and have to press f1 to start on default values. After this everything runs fine except the clock goes back to 2001.Could the cmos battery be faulty? Don't think it would cause PC to be totally dead - would it?

Answer:CMOS Checksum Error

Sounds like a standard flat/dead CMOS battery normally a CR2032click here

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I have just purchased a new Evesham Evolution 2200CL (Intel Celeron). The reason I chose Evesham this time was for their two year on site warranty. From the outset, when booting from cold, I receive the the following error message: CMOS checksum error - defaults loaded - F1 to continue Del to enter setup. On entering setup I find that the date/time has defaulted out to Jan 2002. I correct this and F10 to save and everything is ok for the remainder of the time that the machine is on line. The settings even hold on reboots. It is only when the machine has been off overnight that I receive the checksum error. I reported this to Evesham who promised to send an onsite engineer. They eventually gave me a date for his attendance, but low and behold he rang and said he couldn't make it that day! That aside, I'm taking this up with Evesham, but that doesn't releive me of this niggling problem. I have replaced the CMOS battery with a new one, but this didn't cure the problem. Is this something simple that I can fix myself or do I have to wait for that elusive IT man? Any suggestions would be appreciated.

Answer:CMOS checksum error

Dyffryn this could be a result of any one of several problems,ie motherboard,memory,graphics card. I would strongly suggest you asking for a replacement machine. How long have you owned this PC?

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I have an HP Pavilion 8562 that was having some problems. Specifically I had to replace the cooling fan on the chipset. Also it was losing time so I replaced the battery. This is where the problems began. After I replaced the battery I tried to start up the computer and I get the error: CMOS Checksum Error - Defaults loaded. Press F1 to enter setup F2 to continue. However, I can't get out of this screen. I tried loading the BIOS on a floppy and seeing if it would boot from the A: drive, same screen. I tried removing the battery for almost 2 days in the hope that the BIOS would clear from memory and it would start over. This didn't work, same screen. I can't find the manual (this is my parents computer, I'm fixing for them) to see if the board has a jumper to clear the BIOS. I'm out of ideas to try. Any help out there.

Randy
 

Answer:CMOS Checksum Error

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I recently rebuilt one of my PC's in a new case but when it starts up it says "CMOS Checksum error - defaults loaded" I try to press F1 but the keyboard/s just don't seem to work. It can't be the battery because the motherboard is only a few years old. Any ideas?!?!
 

Answer:CMOS Checksum Error

well by pressing F1 are you trying to access the BIOS? If so try pressing the delete key or F8 and see if that helps, if not just try replacing the CMOS battery on the motherboard.
 

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Hi,
I have replaced the battery and still get this message . I hit F1 to continue and nothing. Just stops. No HDD activity. If I hit DEL to enter setup, the same.
I have a soltek sl75drv mobo, athlon xp1900 cpu, 512ddr ram, ti4200 graphics.
I had reset bios to optimized defaults and rebooted, and it has been like this since. The only other prob was a wrong date issue. Wassup? This machine has been going fine for several years, and has had no recent hardware changes/upgrades.
 

Answer:Cmos checksum error

Hi

Sounds like something I once saw on a HP RP5000, it was a corrupted BIOS chip and had to be replaced...

Regards
 

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Hi,

I saw this messageboard when I was researching some tips regarding CMOS Checksum errror. I would like to have some advise regarding this error message: CMOS checksum error- Defaults loaded Warning! CPU or CPU ratio has been changed. Please re-enter CPU settings in the Set-up!

Is this an indication of a failing CMOS battery? I opened the CPU, got the CMOS specs SONY CR2032 3V. Should I go ahead in replacing this? Another thing, if replacement is the next step, is MAXELL CR2032 3v ok, even if the brand is not the same?

Hoping to read your advise soon. :blush:

Thank You,
 

Answer:Cmos checksum error

Hello and welcome to Techspot.

It my well be your cmos battery that needs replacing.

Any CR2032 battery should be ok.

Regards Howard

:wave: :wave:
 

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I have a new ABIT motherboard, brand new, I just got it off Tigerdirect.com, well i was having some problems, and someone told me to take the CMOS jumper or whatever it's called out, and put it into slot 2, than put it back into slot 1. I did that, and now my comptuter is saying CMOST checksum error, press F1 to continue, or press Del to enter setup. I tried doing both, and the computer doesn't do anything. Anyone know what i can do to fix this problem?
 

Answer:CMOS checksum error

pepsipaul said:



I have a new ABIT motherboard, brand new, I just got it off Tigerdirect.com, well i was having some problems, and someone told me to take the CMOS jumper or whatever it's called out, and put it into slot 2, than put it back into slot 1. I did that, and now my comptuter is saying CMOST checksum error, press F1 to continue, or press Del to enter setup. I tried doing both, and the computer doesn't do anything. Anyone know what i can do to fix this problem?Click to expand...

Take out the CMOS battery and wait 30 seconds. Replace the battery and press F1 to load defaults and you should be able to procede into windows.
 

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AMI Bios gave me this after installing linux from 7 home premium x64.Installed server foundation 2008 r2 64 bits still got this error.I have a habit to turn the mains off,and every time the mains is on,the computer auto-magically turns on and present with cmos checksum error date and time not set press f1 to load defaults or del for setup.Pressing f1 will not cause errors,but the time auto reset to 1/1/10 .thisis bugging me for a long time as i cannot update properly until i get the right time,which is troublesome.the battery is not dead(only 1 year old),and i cannot change it or warranty is void.How to fix this error?
 

Answer:CMOS checksum error

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i bought a new iqon computer from tesco. when i opend it and setup and pressed stast button after that i see that cmos checksum error. i don't understand it?

Answer:i've got CMOS checksum error

The most common cause of checksum errors in CMOS is a battery that is losing power. Viruses can also affect CMOS settings, and motherboard problems can also affect the stored values.As in your case its a new PC i would just change the battery, only cost a couple of quid..

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While trying to update my bios (matherboard Gigabyte 8pemt4) everithyng went ok but after reboot i recieved:

Award BootBlock BIOS v1.0
BIOS ROM checksum error
detecting floppy drive a media...
insert system disk and press enter

i took out the batery left it one hour and stil the same problem, i took the batery out again and left it 10 hours and stil the same, i created a bootable disk with these flash files provided for my type of matherboard flash872 8pemt4.f4, trying to update like explaned in the gigabyte page (a:\flash872 8pemt4.f4) the system does nothing.

please help

Answer:Cmos Checksum error

sounds like the update went screwy....

your system rom hardware may be bad from the update which means a new mob is needed. why did you update anyways?

Did you reconfigure your bios afterwards?

can you boot from a cd to possibly repair the installation just incase it isnt bad hardware?

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at boot up the message cmos checksum error comes up intermittantly. Press f1 to continue follows the message the machine usually boots on the retry. What type of error is this ? Is it a warning of worse things to come?

moose69


 

Answer:cmos checksum error

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hi there I have just switched my pc on and before I got to the desktop I got this message as below,
1013 cmos chechsum error- defults loaded

1013 I know is my mother board version,
thanks inadvance, t4lor.
 

Answer:cmos checksum error ?

replace the cmos battery, as it is generally what causes that error to crop up.
 

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While trying to update my bios (matherboard Gigabyte 8pemt4) everithyng went ok but after reboot i recieved:

Award BootBlock BIOS v1.0
BIOS ROM checksum error
detecting floppy drive a media...
insert system disk and press enter

i took out the batery left it one hour and stil the same problem, i took the batery out again and left it 10 hours and stil the same, i created a bootable disk with these flash files provided for my type of matherboard flash872 8pemt4.f4, trying to update like explaned in the gigabyte page (a:\flash872 8pemt4.f4) the system does nothing.

please help
 

Answer:CMOS checksum error

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ok, things now getting daft. I have just started getting this happen on a restart of XP with a Asus K8V-X-SE motherboard, the system seems to halt on boot, Screen turns off to stanby and pressing reset switch then comes with error CMOS Checksum error BAD.I change the BIOS Settings back turning of LAN and changing the boot option to SATA HDD only the clock and date stays the same but the other things change even though I save changes.I have just added a TV Tuner and also its a clean install of XP SP2 Home with a SATA II HDd on a SATA 1 type motherboard, so I will just put the jumper cap on and see it that makes any difference. Be back tommorow didn't think it was this late.Thanks if anyone can work out why I get CMOS checksum error.

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I have a problem.

I just bought a brand new kv7-v motherboard and AMD Sempron 2600+ from tigerdirect.

I went home, mounted the board properly, plugged everything correctly (I think/hope).

When I start it up, it seems to start fine with the default settings...but it gives me the CMOS Checksum error and I have to push F1 to continue.

When I go into the BIO and change it from the defaults to user define with the EXACT same frequency, my computer shuts off and sounds an alarm.

I have tried changing the power supply but I still get the same problem....

Can anyone help me?
 

Answer:KV7-V Motherboard with CMOS Checksum Error

First turn off the power

Remove the battery let it sit

Replace the battery after about 30 seconds

If you still get this error replace the battery itself

let us know
 

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Phoenix SecureCore(tm) NB Copyright 1985-2009 Phoenix Technologies Ltd All rights reserved Build Time: 05/06/10 12:54:29 ---------------------------------------- 3896 M System RAM Passed 256 KB L2 cache per Processor Core 3072K L3 cache Detected System BIOS shadowed Video BIOS shadowed Fixed Disk 0: WDC WD5000BEVT-75ZAT0 ATAPI CD-ROM: TSSTcorp DVD+/-RW TS-L633C Mouse initialized System Configuration Data Updated ERROR 0271: Check date and time settings WARNING 0251: System CMOS checksum bad- Default configuration used <F1>resume <F2>setup 
fter this I press F2 and change the date and time then save it. I can access windows with no problem. After I turn the laptop off again and turn it on after some time this turns up again and I have to change the time again from 12:01 8/20/2009 to the actual time. What do you think is the problem? 

Answer:Getting System cmos checksum bad error

The reserve (CMOS) battery need changing.  What model system is this?
Is the main battery also dead?

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Hi everyone,

I just installed a new Diablo Expansion Slot 80mm LED Case Fan for my video card. I connected it parallel to the 4 pin But obviously I did something very bad - when I started my PC there was a high-spinning noise and then a black screen came up with the following:

VERSION ULB 408H
MAIN PROCESSOR: AMD ATHLON(TM) XP2000+
MEMORY TESTING 786432K OK.
BIOS GUARDIAN(R) ENABLED.
YOU WILL NEED TO DISABLE BIOSGARDIAN TO UPDATE
<CTRL+C> TO ENTER CLOCK SETTINGS SUB MENU
<CTRL+P> TO LOAD PERFORMANCE DEFAULT SETTINGS AND RESTART
<CTRL+F> TOLOAD FAIL-SAFEDEFAULT SETTINGS AND RESTART

CMOS CHECKSUM ERROR - DEFAULTS LOADED

PRES F1TO CONTINUE, DEL TO ENTER SETUP.

So here is what I've done so far:

1.So I switched PC off and removed the fan but it didn't help at all. The noise is actually increasing and that same black screen comes up. I guess I fried something in the system(hopefully not).

2. Originally I thought the grinding was coming from the hard drive.So I disconnected it both from the PSU and the MOBO, then powered back on and found out that the noise is coming from my Video card's fan.

3.Took the video card out, cleaned the fan, and then placed in back into the slot.

4. Connected back the HD and plugged the monitor on.

5. Powered the system back on and it came into the BIOS setup mode, telling me that there is a NEW Hard drive and I have to enter setup mode. What should I do now? I'm afraid that all th... Read more

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Whenever I power up this new machine (from being completely switched off from the back) the CMOS looses its contents, reverts to default and says "CMOS Checksum Error - F1 to Continue DEL for Setup". After that its fine (even if you don't touch the settings). Once you set the date time, it runs fine and retains its contents even on reboot or if you switch it off from the front (which I'm assuming is a standby mode cos the green LED on the board is still on)... that is, until you completely power off from the back, then it loses its settings - again!
I'm assuming its the little silver battery which is probably dead (weird considering its a new motherboard) but as I don't really keep up to date with technology anymore like I used to, I can't be sure. Can someone please confirm this?

Answer:CMOS Checksum Error On Power Up

Check to make sure that the cmos clear jumper is there and in the right position.

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I tried to flash my Bios and now when I boot up I get the CMOS/GPNV Checksum Bad error and then I go into bios setup and try to save changes and then it sounds like it is trying to boot and then I get

PXE-E61: Media Test Failure, check cable
PXE-M0F: Exiting Intel PXE ROM
Boot Failure: System Halted

I tried changing the cmos battery, it did not work. I am going crazzzzy. I have an Intel PT845 MoBo in a Gateway desktop computer, it is P4 and I am running XP Pro. Any help will be greatly appreciated!!
 

Answer:CMOS/GPNV Checksum Bad Error

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hi guys...i'm having computer problems. It started with my mouse lagging when I would click on stuff. It would freeze up for a few seconds when I tried to click on stuff or just freeze completely but only my keyboard worked. I even bought a new mouse but it still does the same problems. My computer recently just started restarting by itself. I get this error message saying Cmos / gpnv checksum bad error and it would startup sometimes now after i get the cmos error my computer just freezes with black and white lines. My computer runs at 34/35 C? when I was looking at it through bios.

I have reflashed bios and even installed a new battery. I think I got this error message one day saying on my startup screen when it usually says 512 nvram update ok i got update failed. So I moved my ram into a new spot and it started to startup at least sometimes but I still got some error messages. Could my ram be the reason why my computer keeps shutting on and off and why my mouse is lagging? Any suggestions or help? I can clear some stuff up since I kinda just typed it fast. Thanks

Motherboard: Gigabyte 7vrxp
Amd 1700 XP

Answer:cmos / gpnv checksum bad error

If you've got more then one stick of ram I'd say pull all of them out but one, and see if you still have the problem. if so pull that one out and put in a different one. Try all the sticks in that slot, if you still have the same problem, repeat the process in the next slot. You should start in the number one slot too, work down from there. On the other hand if only one of the sticks manifests this error, toss it and buy a new one. If it happens with each sticks in each slot, might be a bad board. Another thing to do is run a mem test. This is the frist one I found on google

Memtest86+
http://www.memtest.org/
Download:
http://www.memtest.org/download/1.55...5.1.floppy.zip

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Today when i was using my computer, there was a powercut and the computer got switched off suddenly. Then when i restarted it i got an error at the POST screen saying

CMOS checksum bad
Press f1 to run setup
Press f2 to load defaults.

Why did this happen? Earlier also there were my computer was switched off suddenly, but this error did not come. Also, after i hit f2 to load defaults, and when i booted to windows XP, the system time was changed to April 2000. Why did this happen?

Thanks ...
 

Answer:Solved: CMOS Checksum Error

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when booting up i get cmos gpnv checksum error and can not continue to load windows. i have the intel d845pt board and p4 2.0 cpu 1 256mb ram everything was running fine. until i went the the intel website downloadshttp://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=786&OSFullName=Windows*+XP+Professional&lang=eng&strOSs=44&submit=Go!i download all of them first i insatlled the sound driver worked fine then i proboly tryied doing bios update and i just clicked next next next and it restarted the pc.. then i get the error... cmos/gpnv checksum error?!?i tryed a new battery no lucktook battery out unpluged pc for 10 min. it reset everything the time date..i still get that error i went into the bios switched a few thigs around tryed to save it look slike it does..restart the pc and i get the error i go into the bios  and the stuff i changed are chagged back into what they where changed to before. the defult settings i guess. i tryed all the system defult settings then save exit nothing..i tryied taking the jumper out it doesnt show anything on the screen. so i put it in config and did all those changes it seems like its not saving them. i tryed putting a passowrd on it saves it.. weird can someone please help me?did i break the chip? buying trying to install that update??is there a way to by pass the error codes?someone please help?!

Answer:cmos/gpnv checksum error?!?

If you flashed the BIOS and nothing was wrong with the machine all bets are off...What exactly did you DLoad and run from that page ? ?And why ? ?A little more history on what got you to this point will be very helpful...

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Cmos checksum error default settings loaded press F1 to continue or press Del to enter the bios setup
and No audio

Hi. When I turn on my computer I get this annoying error " cmos checksum error default settings loaded press F1 to continue or press Del to enter the bios setup".My computer clock is not working properly and it shows wrong time( I reset the time many times and it again shows wrong time).I think this may be due to dried up battery or battery failure.When I go to control panel>>sound and devices it says "no audio device "and everything is disabled here.
I uploaded some pics of this please take a look here:-
http://imageshack.us/photo/my-images/98/soundsandaudiodevices1.png/
http://imageshack.us/photo/my-images/807/soundsandaudiodevices2.png/
http://imageshack.us/photo/my-images/807/soundsandaudiodevices3.png/
Is this audio malfunction because of cmos battery failure?I tried playing music files i get this error "Windows player cannot play the file because there is problem in your sound device or it might not be properly installed or another application may be using it".I get this same error with real player,media player classic too.Km player gives different error"some of the streams associated with this audio are in unsupported format ".I can play the videos but I cant hear its audio.
I have Realtek Hd audio system

This audio failure is confusing me. It happens randomly . I mean I can hear the audio normally sometimes... Read more

Answer:cmos checksum error and no audio

I've always read that the time start getting wrong when the cmos battery is going out.
I would replace that first thing.
 

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Stuck at CMOS checksum error - Defaults loaded

Push F1 to continue, DEL to enter SETUP
But went i push either keyboard dont seem to work , tried 3 different ones and cleared CMOS with jumper
 

Answer:Stuck at CMOS checksum error

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