Computer Support Forum

No power to the psu bios...nothing but a green standby light on the mobo.

Question: No power to the psu bios...nothing but a green standby light on the mobo.

Hello everyone

This is my first post, as well as my first build attempt, so please be gentle.

P4 3.0 ghz
480w psu
1 stick MD4412UOE 512MB DDR-400 PC3200 Power Memory
Integrated Intel Extreme Graphics

I purchased all of my parts from newegg, and i finally found the proper time to put everything together. After getting a cpu fan that was too big, i purchased a AeroCool cpu fan. I had to remove the P4 retention module, and I now have the fan installed. I installed everything else (cd-rom, hdd, disk drive), and I turn the power on, to find that nothing is happening. I have taken the mobo out of the case to make sure it isnt grounded, and none of the fans power up. The only indication of power I get is the green stand-by light located between the second and third pci slots, and the keyboard lights flash on, then off. Whenever I turn the power switch on, the same thing happens with the keyboard and the rest of the mobo.
I have a buddy who is also putting together his own build, and he said that it was strange to hear that not even the psu fan is starting up. The psu has two power receptables, that I can best describe as female and male. Dont know if this makes any difference. I dont know what to do, and I was wondering if this sounds even remotely familiar to anyone. Am I missing something with some of the jumper settings, or does it sound like a huge problem?

Thanks again in advance for any help, and I'm glad I found my way to this place.

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Preferred Solution: No power to the psu bios...nothing but a green standby light on the mobo.

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Answer: No power to the psu bios...nothing but a green standby light on the mobo.

Have you plugged in the seperate 12V lead (4-pin) to the motherboard? It's used to supply the processor power.

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I have tried everything several thing to get my MOBO powered up ..Right now there is only a green light ..i have tried to switching the PSU .I have tried crossing the pinns with a screw driver and nothing
what else ?

the MOBO is a P4P800 se

please help

thank you

Answer:No power to the psu bios...nothing but a green standby light on the mobo

Try assembling the motherboard outside the case to see if it will boot then

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256 DDR
Gf4 4200
tbird 1400
CoolerMaster hhc001
antec 480 psupply
maxtor 40 Gig
All i did was take out my tbird 1.4. I went to 7-11 to get a drink, came back. put in an xp1800+ and now it wont power up.
Ive reseated the mobo,took uot all periphrials,cleared cmos,I think it might be grounded but i checked This has plagued me for almost 6 hours please help!

Answer:comp wont power up when i hit pswitch. The green light on the mobo is on

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Putting together a build for a friend, however, I believe the motherboard may have been damaged or was damaged upon my taking part in the build. I assembled the parts, a 430w thermaltake psu, an asus mobo, e5200 intel processor, western digital hard drive, 2 gigs of GSkill, ati hd 4850 gpu and an LG dvd drive.

Posted, gave an error message about cpu fan error, I google it, it seemed to be relatively harmless. While in the bios the computer's signal disappeared, I attempted a reboot to no avail. No error codes, cpu fan stopped spinning. Removed memory, no error code, removed 4850, no error code, case fan connected to the motherboard spins when powered on, motherboard shows green light, no signal detected,

I tested the processor in another rig, and it worked fine, and the cpu fan spun fine. Tested another power supply with said motherboard and the motherboard fan would not spin and it would not post, and no error codes. Is my motherboard dead? Any help would be greatly appreciated. Thanks.

Answer:New Build, Mobo green light, psu powers case fans off mobo, not cpu fan no beeps

check and recheck the connections on the board, if unsuccessful, make sure you haven t short-circuited the mobo, ...

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hi guys
as per one of my friend I could replace my memory (RAM) up to 32GB, so I've ordered a couple sticks of Kingston HyperX so I've took slot 1+2 and replaced 2 4GB Hynix RAM by 2 8GB HyperX...
Now I have a good old CPU that doesnt work plus it smell like burnt plastic with no apparent damage to the board or RAM... 
Startup: 2x BEEP (No BIOS)Motherboard Light: Solid AmberBootup Light: Flashing AmberPower Supply Light: Solid Green
I've tried booting from  a single RAM unit on slot one then slot two, and nothing has changed... anyone can help?
Motherboard: 0Y2MRG i7 2700Primary: SSD Kingston HyperX Savage 240 (added)Secondary: Seagate 1.5TB + 2TB (added) Barracuda (7200)New RAM: ts/HX316C10FK2/16 RAM: HMT351U6CFR8C-H9

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So today I was just watching a YouTube video, not gaming, not doing anything too intensive. Suddenly my computer shuts off with the power button blinking green. No BSOD, just powered off and won't turn back on. I tried unplugging the power cable and holding down the power button for 30 secs with no luck. My computer is pretty hot idle at 60 degrees Celsius. But it's been this way for years with no problem. Could something overheating just by watching a YouTube video? When a CPU overheats it goes into blue screen right? So it can't be my CPU. I have a cooler master PSU. CM is a trusted brand. And I also have an MSI motherboard.

Answer:Computer randomly turns off with green blinking green light on power

Doesn't necessarily mean the screen will blue out because of heat problems mate run the BIOS and post back the readings for the CPU temp (seems a tad high to me for idle) and the CPU fan speed.

The other thing to do is check out the PSU as well via these
PSU - Jump Start

but try the BIOS first and if you do the PSU stuff DO NOT attempt to open the device itself you just need to measure the volts on the leads. However volts does not necssarity mean enough current (amps)

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Just moved to a new apartment and now my custom rig won't power on.

The mobo light is green.

When I try to power it on via the button, every powers on (fans spin etc) for a second then shuts down again. It won't power on again until I flip the switch.

I checked the voltage setting and it's at 115 which is right since I'm in the US. I had tried 230 once when I found it wasn't turning on and it stayed on, but I powered it off since that shouldn't be the setting to use.

Any idea what this would indicate? What causes the power to instantly shut off?


Vid card: XFX HD-585X-ZNFC Radeon HD 5850 1GB 256-bit DDR5
CPU: Intel Core i7 Processor i7-920 2.66GHz 8MB LGA1366 CPU
CPU fan: ARCTIC COOLING Freezer 7 Pro Rev.2 92mm

Answer:Green mobo light, briefly powers on but then off

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Story time: a few years ago I started upgrading my pc an hp a6244n I bought a cpu and a gpu GTX 550 ti And an Intel e7500 the gpu worked but the cpu did not because the mobo could not support it so I bought a mobo that could i.e. (P5b-vm do) but the chord for the power button did not match so I recently bought a case to get it all working a rosewill fmb-01 and got it together only to find there's a green light blinking on the mobo when I went to plug it in I also bought a PSu Rosewill 450W 80 PLUS GOLD Certified Power Supply CAPSTONE-450 Black

Answer:New pc case and mobo p5b-vm do green light on board

The manual that came with your new motherboard should tell you what the blinking green light means.

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Just got home and I noticed my pc was off, I tried to turn it back on and nothing happened. I jumped the power supply and it's fine, the mobo light is green and jumping the power button does nothing.

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No green light on MB. Sys will not BOOT at all. I had to do a HARD shutdown because of a freeze-up and Cont/Alt/Del would not work. Afterwards, computer would not boot at all. No GREEN light on Mobo. Sent board to Gigabyte and about five weeks later they sent what looked like a brand new Mobo back to me without ANY type of explanation. Installed everything as usual; still NO boot nor any GREEN light on Mobo. Tried brand new Antec PS and still NO BOOT and still the green light on the Mobo will not light up. Nothing, Nil, Nada, HELP, HELP, HELP I am running Windows XP Pro, Gigabyte MA790XT-UD4P MoBo, NOW a brand new Antec 650 Watt Power supply <<< replaced the older one after I thought it had possibly burned out. Two Seagate 750 Gigabyte Hard Drives, and 4gigabytes of Ram.

Answer:System will not boot, no green light on mobo.

Disconnect all drives and try booting again. All that is needed to POST (boot) is the following hardware: Motherboard, CPU w/HS/fan, 1 stick of RAM, power supply, graphics card or on board, monitor, keyboard. No other cards, RAM, mouse, cabling, etc. Only connect the power supply to the motherboard. Main 24 pin connector, auxiliary CPU power connector, any power connectors required on a graphics card. Be sure the CPU fan is connected to that header. Momentarily touch the 2 start button motherboard pins with a screwdriver to start the system. Unplug to stop.You may have something like a dead hard drive that is stopping the system from booting.Did you clean off the thermal material on the CPU and then apply new thermal paste according to directions for your processor?

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Hoping to get some sympathy there....seems like there are lots folks who know what they are talkin about so any help is well appreciated.

Story is:
Dell dimension 440 from 2001....was ran off a generator which would abruptly kill power to the computer a lot. Think this needs to be mentioned. Started having problems gettting the computer to turn on...resolved it by shaking and beating the hell out of it(Actually it was more of an opening and closing of the housing, ). It actually worked.... about fifty times. Finally it is no more...there it sits...I opened it up, cleaned with compressed air, checked all connections multuple times, took out all PC cards, disconnected all drives, keyboard, mouse, moniter, and nothing but a green light on my mobo, no fans, no beeps...SHOW ME THE WAY!!!! PLEASE PLEASE PLEASE....

- could it be that stupid little watchlike battery that has been in there for six years now...)

- a bad switch that turns on the computer (not the one on the back of the PSU) there a way to override this switch? loop the right wires together?

- what else?????

Answer:nothing but a green light on my mobo, no fans, no beeps...SHOW ME THE WAY!!!!

An Honorable death, Then Computer Heaven

If the fans don't start the 12 volt rail of the power supply could be bad.
And I suppose it could be that stupid little battery which, incidentally, HOLDS ALL THE INFORMATION in the BIOS. This is all I know. Sorry about the Caps.
Sure, just take the 2 wires off the on/off switch and splice them together, like stealing a car.

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I picked up this Alienware 5700 off ebay to hopefully refurbish for my son but I'm new at this and still learning and so this thing has me baffled. The laptop is in pristine condition but shows no signs of life. When I plug in the power supply the green light on the power supply goes from solid green to blinking rapidly to the point you can barely see it. To me that would mean a short somewhere right ? If so where ? Has anyone else ever had experience with something like this ? I just don't want to go buying a new battery for a laptop that maybe fried already. Any help would be greatly appreciated.

Answer:No power, no lights but green light on power supply blinks rapidly

Remove the laptops battery and try the AC power only. If the green light does the same, it still could only be a bad AC adapter, or at worst, a shorted laptop motherboard

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I have a Sony VGC-RB42G computer. I recently moved my computer, cleaned off all the dust, and when I plugged everything back in, it won't power up. The light on the power supply blinks green, inside the motherboard also has a green light that blinks as well. It has a ticking sound too, but I am not sure if it is coming from the power supply or the motherboard. Any idea what could be wrong.

FYI, I have already unplugged everything from the power supply, pulled out the ram, checked the battery, and put everything back together and still no change. One thing I thought was strange was after I unplugged everything, I pulled the power into the power supply again and this time the green light came on but did not blink. It stayed solid.


Answer:No Power, Blinking green light on power supply and motherboard

Sounds like a Power Supply problem.

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Everything is pluged in but no noise nothing comes on but the little green light on the front .Help Help

Answer:No Power But Have Green Light

Green means go. In this case go check inside the case to see if all fans are turning and if the power supply appears on when started. We can go from there.

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hi people this my fist time on here so i hope some 1 can help .....i got a emachines 3210 pc and it was working fine .went to turn it on yesterday and got no power but i got a green light on motherboard i really need to get this sorted as i borrowed the pc off a m8 and i dont really want to folk out for new bits . it would be great if some 1 has anyidea wat it could be.other wise its off to bank get some money and get a new motherboard lol.... oh i got a 2.70ghz celeron processor if that helps in any way cheers

Answer:No power to PC but I get a green light on motherboard

The eMachines power supply (and possibly the motherboard) is bad. Just because you have a green light, doesn't mean that the power supply or motherboard is good. It takes many separate voltages to operate a computer. The geen LED means only that you have +5volts to the motherboard

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Hi folks, having a problem here. I have the motherboard in the title and just yesterday after shutting down and replacing a fan, my computer will no longer turn on through the case power button. I thought it might be the case wiring that is shot, but I tried booting the system by doing the "screwdriver to the power pins" trick. I dont even get a reaction at all. I have taken all the parts off and put them back together, but still the same. So... did my motherboard randomly fry from just replacing a fan.. (maybe dust?) I'm not sure. I just need some assurance on if it is the motherboard so I can get a new one. I dont have any other computers at the moment to check the parts. Thanks guys, and please try to be swift.

Answer:Asus P7P55 Pro green light, no power

I always try another power supply first for this condition. The green led mean only that 5 volts is present. There are other voltages needed from the power supplies

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My PC wouldn't turn on on Monday night - just a green flashing light on the front. After a bid of fiddling with the kettle lead etc and moving the pc, it worked. After switching off as usual the same thing happened the next night. I replaced the kettle lead but now it just sits with the green light flashing. I've checked the forums but can't find someone with the same problem in that the pc DOES work every now and again. PC about 15 months old. Has anyone any suggestions (hoping its not the hard drive).

Answer:Solved: Green Flashing Light no Power!

Solved - had a chappie at work have a look and the fan doesn't move. By the way the green light now doesn't come on at all. It's the psu and it's being fixed later. Thanks for looking and hopefully this may help someone else!

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My Lenovo 11e Chromebook will not power on. The power light blinks orange and green over and over. I've tried all the resets and even put a new battery in it. What could be causing this? Thanks,

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Hello, I'm trying to figure out if the power supply on my hp is bad or not. The green light on back of the tower is flashing and the computer won't turn on. I've tried all of the preliminary things and nothing works -- the green light keeps blinking until I disconnect the large plug to the motherboard, then the light stays on and doesn't blink. Once I have the power cord disconnected and the main plug to the motherboard disconnected as well, I then have tried replugging the power cord and then replugging the main plug to the motherboard (kind of trying to jump start it), the fan tries to come one (but only for a second, then goes back off, so it won't boot).Does anyone know if this means that the power supply is bad or if something else might be wrong? I'm wondering if the power supply would be bad when the computer is clearly trying to start, but not quite making it.

View Solution.

Answer:no power and green light on my hp pavilion is flashing

If the PSU blinks it needs to be reset.unplug the electrical cable from the wall and the PSU.move the red voltage selector to the opposite position it is in and then slide it back. If you live in the USA 120Vac-->220Vac-->120Vac see the image below.  After you have done this you can plug the power cable back into the PSU.  Connect the power cable to the wall power. If the PSU is still serviceable it will no longer be blinking. Best regards,erico Edited to fix the broken image link.

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I am working on a frends desktop that recently might have been hit by lightning. After a big storm their desktop would no longer power on. Now, I am no stranger to computers. I unplugged the motherboard main connector and I get a solid green light when I plug the psu in. Plug the main connector back in and plug the psu in I get blinking light again. So either its the PSU or mainboard. Im thinking psu since usually that is what goes first, but at the same time I am leaning towards mainboard. what do you all think? On another note, Are these boards proprietary? I have a few standard ATX PSUs I could test my theory with but not if I have to rewire them.

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All in one won't start. power supply light is green but when conected to computer it goes off or start blinking very dim. comp won't start or make any noise. I brought a new original power supply and the same situation.

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Answer:laptop will not turn on have green led light on power supply...

please help if u can thanks

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Hi, my X240 laptop has suddenly stopped turning on. When I press the power button, the indicator light flashes green three times. I've switched out the AC adapter, same result. Can anyone tell me what the three flashes indicate? Is my motherboard fried or is it potentially something else I can troubleshoot? Thanks!

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the monitor power light just blinks green

Answer:Monitor power light blinks green on boot

do you get any beeps when the machine starts?check the video cable is connected correctly to machine and monitor.try another video you see the post messages?check that your video card is correctly seated.i hate computers!but cant help myself....

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When I shutdown the vista PC the monitor power light stays green and a box saying, "self test feature check" floats all around the monitor. My XP machine after shutdown the power light turns amber with nothing being displayed.
Does anyone have any ideas? The monitor should hibernate when the PC is shutdown.

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We bought around 40 of these X220 I5 before xmas and now more than 20 of them have failed. The company we bought them from tried everything but they ended up switching the mainboard on the first two that failed.We were told it was a batch issue with the serial number R9-HNXXX and now all of those are changed into T420. But today we had the same problem with serial number R9-HXXXX that was bought two weeks earlier and with different config - I7 and SSD. All of them with the same problem that is described in subject. Are there any known batch issues? The problem is not with the tablet version and sorry for posting in the wrong forum. Thx


Go to Solution.

Answer:X220 - no post and green light around power button flashes every 3 - 4 second

I was preparing a X220 for a VP in my office and i left on vacation. When i came back, the laptop was dead and i can't power it on. I unplugged the AC and removed the battery and waited a bit, plugged everything in again and still the same thing. The battery LED blinks 3 times then nada. (no fans, nothing) I tried a little trick from the S model, removed AC and battery and pressed power button for 30secs and re-plugged everything but it didn't work. Anyone have any ideas?

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My neighboor has a Pavilion P6710f that won't turn on. The green light on the power supply is steady. My Dell Inspiron had the same problem a few months ago and after replacing the power supply it works fine.  how can I tell if the power supply in this Hp needs to be replaced?

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My sister-in-law has an eMachine that she turned off and unplugged before leaving for vacation. A week later she returned and plugged it back in only to find it won't turn on. I don't know much about this pc other than it's a tower and about 3 or so years old. I figured it was probably the PSU (power supply) but wanted to verify as many things as possible. Basically, there is a green light on the back of the pc (on the PSU) that will flashes on and off when you try to turn on the computer. The PSU fan doesn't spin and nothing else makes any attempt to turn...just dead.

I pulled all the power connectors and jumpered the power switch pins (15-16), this gave me a solid green light on the PSU and the fan spun normally. I tested with a voltmeter and got the proper voltage on all the pins. I am thinking that this probably rules out the PSU but not 100% as something could be 'pulling it down'???

Any ideas on what else to look at? I hate to buy a PSU when it appears this one is ok. That pretty much leaves the MoBo and/or CPU. I've pulled all the cards and memory trying to get it to do anything and nothing affects it. I suspect there is something wrong with the MoBo but don't know how to verify that.

Any help or advice is appreciated. Thanks!

Answer:eMachine power supply (PSU) green light flashing, won't turn on

What you need is a PSU Tester which you can get on eBay that will tell you if the power supply is bad.

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I am new to this excellent forum and wondered if anyone out there could possibly help......

I have a Dell Optiplex GX620 Desktop PC. Several weeks ago I had a slow flashing amber power light, indicating a PSU or switch fault. Firstly I replaced the switch - made no difference. Then I replaced the PSU - The slow flsahing amber light has now changed to a blinking (very fast) GREEN light on the power button.

All of my research so far has suggested that this suggests the PC is in standby mode! But the PC isn't even switched on - no fans running etc. In desperation I have even plugged a USB mouse in to see if I can "wake" it up! I have a amber AUX_PWR light on the Motherboard which is on.

Nothing happens when I press the power button - no matter for how long I press it in!

Has anyone got any ideas?

Many Thanks in advance

Answer:Dell Optiplex GX620 Blinking Green Power light & won't start!

Welcome to Tech-Forums, lardy2001!!

Do diagnostic lights display anything? It's those 4 lights I believe that's located at the back of the computer.

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I have an HP desktop. I accidentally hit the standby button on the keyboard. It started to put my computer into standby but seems to have completely powered it down. I couldn't turn it back on at all. I've tried hitting the power button and unplugging the computer. Nothing works. There is a green light near the power cord in the back blinking and that's it. I've tried unplugging all peripherals before plugging the power back in. I've also tried unplugging it and pressing the power button a few times before plugging it back in. I just can't get it to turn back on.

Answer:Computer wont turn on after standby - power light blinking

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I have a think centre a70z . when I turn the power on the screen is black and the green light near power button does not turn on. Usually the green light blinks but now it doesn't. In simple terms my computer is not working even though everything inside is working.Please tell me the reason why it is happening??? 

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I have a T7500, was working perfectly until I I upgraded the CPU`s to hex core, when I try to boot, it does not get past the error. The Power Light is solid green, and lights 3 and 4 are solid, this is not a fault code listed in the manual, and have found nothing online to help. I have removed all but 2 sticks of memory and checked the pins on the CPU riser, all seem to be fine. And system works when riser is removed. Does anyone have any clues or fixes that might help me with this. 
Many Thanks

Answer:Precision T7500 Post Error Power Light green, lights 3 and 4 solid

Reinstall the original cpu.
The spec sheet says--
Processors Intel® Xeon® 5600 series processors up to six-cores with up to 6.4GT/s (Intel QuickPath Interconnect) and up to 12MB shared cache. Turbo Mode
and HyperThreading technology on select processors. All processors are 64-bit, support Intel DBS (demand based switching) and Intel VT (Intel Virtualization Technology) Note: Intel TXT is not supported

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I just recently Inhearted a computer from school, after my IT teacher couldn't get it to run. Both my IT teacher and I thought for sure it was the power supply or the power switch. The Problem is that the computer dosn't do anything at all when you press the power button. My teacher told me that when he first started having the problem he would press the power button, and maybe Once out of every fifty times it might boot up. then the problem got worse, and only started like every 100th time, now it dosn't work at all. The system is a Used MDG with a 1.5GHZ cpu, and mostly all stock parts. The system came with a stock 300 watt PSU. When I first took it apart, I pulled out the power supply completely, and tried to put in another one, that I had laying around, however it had the wrong connector, so I just put the old one back in. when I put the PSU back in, it seemed to have power, as I could hear the electricty following thorugh it, and a green Led light would light up on the mother board, however if I pushed the power button, it would still do nothing, the CPU fan wouldn't even turn. The only time I actually notice the CPU Fan do a quick turn, is if I disconect the power from the PSU for a long period of time, then reconnect it. So I went to the local computer store tonight with the switch, and the man tested for me, and it did end of being a faulty switch, so I purchased I brand new. I then put it into the computer, and still nothing, and believ... Read more

Answer:Computer will not boot up, Power supply shows green led light on mother board

computer won't boot

I think youve got a bad psu. I've had a similiar problemand replaced the psu. Check the voltage outputs and if not in range replace it. twildet

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I bought a 160 gb Samsung HM160HC for my T42 to upgrade and do a clean install. When I power on the laptop the green hard drive light stays solid. No activity at all and I do not hear any activity from the drive. The bios is 3.23 which is last one for the t42 in 2007. It is also not recognized in the bios setup screen in the startup menu, but the original 40gb shows up fine when I put it back in with the windows XP pro on it and boots up. I also get a media test failure code: pxe-e61 to check cable on boot agent base code (ba1217bc) screen during boot up and of course "operating system not found" since it can't see a hard drive. Even when I load windows for the install it cannot find a source drive to install to. Any ideas what is wrong. thinking I got a bad drive I ordered another one and it does the same thing. I have tried them in both of my t42 laptops with the same problem. Hard to believe I got 2 lemons but it does happen. Any known problems trying to use this drive in the T42 that you might be aware of, it was recommended by some other users when I was researching for a drive to buy for the upgrade. Thanks,Al

Answer:T42 will not see 160gbSamsung hard drive in bios - solid green light no apparent activity

It never hurts to go over the basics:
a) Make sure that all the pins are straight and no jumpers present.
b) Secure the drive face down in the caddy with all four screws.
c) Gently but firmly push it in all the way, applying the pressure to the HD cover, and then secure the cover with the screw as well.
Any progress?

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i have trouble with a pc of mine which is very strange

my pc's specs is
core 2 duo 6300
Zalman CNPS9500 hsf
antec truepower 2.0 550W
2 sticks of corsair 1gig xms2-6400
win2k pro

it's been running fine for months without problem until recently when i tried to swap the ram with that from anther pc; the pc wont start at all (hard drive not spin, none of the fans spin) but the green led light on mobo is on ; i tried :
putting back the old ram,
checking all the front panel connections and cpu fan in case they might have gotten loose,
stripping all the parts from the system (video card, hard drives, pci cards),
swap psu with another psu (also truepower 2.0 550W),
swap case with another working case,
even reinstalled the hsf in case cpu became loose

but nothing works; now there's just the motherboard and cpu but i dont seem to get any sign of powering except on the mobo led.

What other steps should i do to troubleshoot this?

Thanks for any help you can give me

Answer:pc not power up but led light on mobo is on

Have you tried booting up the system without the ram? Take the ram out and see if anything happens when you turn on the puter. However, it could also be that you've accidentally damaged the mobo while swapping the ram... If that has happened, it might explain why nothing is happening and you will have to replace it..

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i am currently in process of building my first computer. i have all the components
except for the hard drive and dvd burner. i put in the memory, cpu, graphics card, and connected the power supply to the appropriate places. i then plugged in the power supply to a power strip and switched it on. thats when the motherboard's lights light up (two out of 4 that is). now i didn't connect the wires for the tower to the mobo yet for power and lights and such, but instead pressed the little button on the mobo that says power. did not do anything. then i decided to plug in the power sw from the tower into the proper place in the mobo (i checked in the manual). i pressed the power button on the tower...still nothing turning on. only the little lights on the mobo. the only thing that i could think of is that you need the hard drive for the entire comp to start...but otherwise i have no clue what to do. im hoping that this isn't a sign of something being doa. so if anyone knows the solution to me problem i would greatly appreciate you helping me out, thanks.

foxconn c51xem2aa
2x gskill 1gb pc2-6400
amd athlon x2 4600+
sapphire ati radeon x1950pro
rosewill rp550v2-d-sl (550w)

Answer:mobo light is on power

Try removing and re-fitting the PSU connections again and also remove and re-fit the memory and CPU. If that does not work, then your mobo is most likely dead.

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Relevance 69.7% old mobo died on me, the tech guy said the CPU power is not working, and he couldn't fix it! i bought the GA-G41M-ES2L, and it's working great, except that it takes 20 seconds to power my monitor after a standby, it instantly powers it on though when i turn my pc on after a shutdown!

..i already tried to close all webpages and applications, thought it might help, but no luck

thx in advance

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Relevance 69.7% old mobo died on me, the tech guy said the CPU power is not working, and he couldn't fix it! i bought the GA-G41M-ES2L, and it's working great, except that it takes 20 seconds to power my monitor after a standby, it instantly powers it on though when i turn my pc on after a shutdown!

..i already tried to close all webpages and applications, thought it might help, but no luck

thx in advance

Answer:New mobo takes 20 seconds to power my monitor from standby!

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Relevance 68.47%

Ok, here's my situation. My PC shut down when I was playing World of Warcraft. I know for a fact the problem was the video card. I was running a Radeon x1650 Pro - which needs at least 350w - with a power supply that had 260w max. The PC wouldn't even power-on again until I removed the card. The card had a burn on it and one of the electrical compnents on the card was partially melted. Now, I put the stock video card back into the PC - a Radeon 9200 - and the system powers up. However, I get no video signal and no beeps. Nothing. I can hear the hard drive quietly spinning, but the only time the orange HDD indicator LED (on the front of the PC) works is when I open either of my CD drives. The green power light on the mobo still goes on. I plugged in my mouse, and the laser still lights up when I move it. The capacitors around the agp slot and the CPU all appear fine. The CPU is generating heat, which leads me to believe it is working properly. I guess that I have a bad AGP slot or just a bad mobo in general. I would need a new mobo in either case. Am I missing something? Any other possible solution here? Would running a video card with too small a power supply for too long ( a period of a few months, normal use) cause a mobo to die? Of course, the card was fried, but I need to know if i fried my Mobo too, or if it may even be the CPU. Thank you!

Answer:PC will not post, no video signal, but Mobo power light is on

The PSU is probably dead now, it might be the only thing dead. (maybe your x1650 pro is still working). Replace it with a decent unit this time. If you plan to game, one the most important components is a good quality PSU.

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Relevance 67.65%

i have a home built computer that is about 5 yrs old now but never given me any problems. i just recently bought a gig of ram, and after i installed it i tried to turn on the pc and nothing happened. i took out the new gig to see if that was it but it wasnt, still nothing. the mobo light is on, and ive checked all cables and tried swapping out the power supply and still nothing. i have no idea what to do and complettely stumped. i did smell smoke but i thott it might have just been dust. lol. its been a few weeks since it happened but i work a lot, and havent had the time.

im running a socket 478 soyo MoBo,
an OC'd intel p4 processor,
a 650 watt PS,
2 gigs of ddr ram
(1 stick pc3200, and the other pc2700)
a geforce 7800 gt, or gs, forgot.
and windows3 HDD's, a normal and a slave.
and another external.

Answer:PC wont power up, mobo light on, but no fans, beeps, or any other activity

what brand of psu? on a 5 year old computer that is always a question, and because the mobo light is on does not mean the power is good.

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Relevance 65.6%

Hi I've had the Dell XPS 8700 for over a year now and it's an excellent Desktop.
I've recently moved my tower to a new location and notice there is a solid orange light on all the time inside the PC, I believe it's on the motherboard... should I be worried this is on all the time? It's just I've never noticed it before.
Also on the back of the PC there is a solid green light, I'm guessing this is to just tell me the PC has Power.
I tried a google search but everyone with the orange light seems to have PC issues, my pc is working fine as far as I can tell.

Answer:Dell XPS 8700 Orange Light inside and Green Light on Back

LED on the motherboard will be on as long as the PC is plugged into a working outlet. It's perfectly normal and nothing to worry about.
If you unplug the PC from the wall and press/hold the power button for ~15 sec, that LED will go off. Again, perfectly normal...
Green LED says there's power to the PSU.

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Relevance 65.19%

i had tried to turn on my dell optiplex 380 to power on but failed.when im on my pc that had sound like shock "ted"inside the to fix this?are my power supply was dead?

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Relevance 62.73%


I am having USB power problems since upgrading my BIOS to 5.2 a few days ago on receipt of an e-mail from Toshiba advising the upgrade

I have a A100-200 PSAA8E running Windows XP Media Edition since upgrading the BIOS to 5.20 I get power fault messages but only when the PC comes out of standby

The error message tells me that " A USB device has exceeded the power limits of its hub port"

I have nothing connected to any of the USB ports

I have spoken to the tech guys at length at Toshiba but they cant seem to explain or fix the problem---one even thought it might be a motherboard problem but I've discounted that as the timing is too coincidental to be anything other than the BIOS upgrade.

If anyone knows of a fix then I would be grateful--is it possible to locate a previous BIOS and roll backwards from 5.20

I am assuming that if its the BIOS then when they issue another one it will correct itself?

Comments appreciated


Answer:Satellite A100: USB power error coming from standby after BIOS 5.20 upgrade

I have one question to you: what was your previous problem before you called toshiba?

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Relevance 62.73%

Issue SymptomsLaptop does not boot in any way (to the BIOS, to the OS, anything).Power button indicator light acts like laptop is powered on constantly (lights up white at all times).Front charging indicator light flashes between white and orange.The issue occurs in all power configurations (plugged in with no battery, plugged in with battery, and battery only). Attempted SolutionsRemoved battery and held power button for 30+ seconds to dissipate any leftover electrical charge.Removed and reseated battery, power cables, CMOS, and hard drive.Removed all dust and debris from laptop. Any suggestions?  The unit is no longer under warranty so I am unable to return it to HP. 

Answer:HP 9470M - Will not boot to BIOS/OS, power indicator light s...

Hello @JonathanPepper, You might want to take a look at this document: Battery Does not Power Notebook or Hold a Charge. It suggests troubleshooting steps to determine if the problem is the battery, the power supply, or the system board.You might find the answer to your battery/power issue as you work through the steps in that HP support article.   Hope this helps, for any further queries reply to the post and feel free to join us again  **Click the White Thumbs Up Button on the right to say Thanks**Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem. Thank You,GBL84I am not an HP Employee

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Relevance 61.91%

Hi guys, hope y'all doing good, just a minor problem i got

I have a built system from about two years now that was always starting/operating/shutting-down fine. Soyo Mobo, AMD clocking 1.8, 512 ram, onboard videocard.

on Sunday, suddenly it completely froze while i was using it (a very faint purple overlay came on the monitor display). after powering off the system, it refuse to power back on.

i know there is power on the mobo because, it lights up when the system is plugged in, all fans start spinning when i push power button, the cd drive lights up and i can eject and close it. the problem is that nothing comes on the monitor (monitor power light is green), there is no beep, no sounds at all (not even hard-drive-reading sound), no display from bios.

i reset the bios, still nothing, i bought a NEW battery(same type) for bios, still nothing..... PLEASE, I WOULD BE MOST GRACIOUS FOR YOUR ASSISTANCE.

Answer:Power on MoBo & drives, nothing happens in BIOS

Possible a failed monitor or failed video graphics card. Replace with another to test.

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Relevance 61.91%

computer froze turned off power, tried to restart all fans run but that is all.No signal to monitor no bios.

Answer:power to mobo but no boot or bios

Have you got the speaker inside the computer connected? Are there any beeps, have you checked the connections for the graphics card and monitor?

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Relevance 61.91%

Ever since the update I can no longer use my computer without the cord plugged in.  the battery is internal so it cannot be removed.  i had a new battery professionally installend but no change.

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Relevance 61.91%


As a total DELL-Lover I only have such Machines around.
I just wanted to build up a OP 760 for my little son.

When I plug the power cort, the diagnostic LEDs 2 3 4 keep flashing while the power LED is amber.
System has only orgiginal DELL components, no add-on cards.

I checked out two CPU types:
intel E8600 and E7300

Also, I tried without any CPU - then, the diagnostic lights for a missing CPU light up.

I would be so perfect if there would be any solution for this.

Anyone knows how to fix that?

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Relevance 61.09%

amd dual core would not start up properly after shut down. Had to put in recovery disk to start up. Now the green light which always use to flash off an on now stays on all the time. And every once in a while I still have to put the recovery disk in to get started. Help!!

Answer:blue light pwr and green light for what ?

It sounds like your green light is the Hard Drive activity LED and if it is on constantly rather than flashing at irregular intervals then I suspect you have a hard drive problem.No amount of inserting your recovery disk will fix a hardware problem.You should download a hard drive diagnostic tool and run some tests.Goin' Fishin' (Some day)

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Relevance 60.68%

Hi! First time poster looking for a little help. I'm building a system around an Intel DX38BT motherboard. I was able to install XP fine. After I installed the MB device drivers and rebooted, the USB ports became unresponsive. I can get into and manipulate BIOS fine, but once the bootcodes disappear it seems like all the USB ports lose power - the numlock on the keyboard and the laser on the mouse go out. Windows boots, and hitting the power switch causes Windows to initiate a shutdown, so the system isn't locked. I've tried the following:

Booting from the DVD drive - system doesn't respond to KB at the "Press any key to bood from CD" prompt.
Tried all available USB ports
Removed all non-essential hardware (including FP USB ports)
Reseting BIOS to "Optimal" settings
Resetting BIOS using the HW jumper
Removing all hardware and reseating the motherboard
Replacing the CPU (longshot, but I was getting desperate...)
Removing the hard disk on the off chance USB drivers loaded *very* early
Booting from a USB drive (yea, I thought it was pointless too, but again...)
None of the above helped. I'm leaning towards "there's an issue" with the mb, but can't explain why installing new drivers in Windows would cause the issue. Thoughts..?

Answer:USB ports power off after BIOS on Intel DX38BT mobo

I think it is a simple case of not having all your drivers and downloads installed.
The secret is usually in the Chipset, rather than the BIOS, but also in the Embedded Controller... and other downloads. If you have all the possible downloads installed (BIOS, Chipset, Audio, Video Graphics, Ethernet, etc.) , then run Microsoft Windows Updates four times, rebooting after each install, and adding all your other microsoft software, you should see everything working.
After each round of updates... drivers, then Microsoft... check your device manager to see what is missing, or what is showing up as yellow or red alert flags.
Then go to and download the free Belarc Advisor. Once downloaded, run updates. Then Belarc will give you a complete list of what is installed, and what updates are still needed. The Free Everest is better, but is not updated as frequently as needed... Belarc always shows any missing updates.

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Relevance 60.68%

Howdy, I'm at my wits end here, and I was hoping one of you could point me in the direction of something else to try.

Working on friend's 2003ish eMachine (ick), because his motherboard chipset heatsink fell off. Used some thermal adhesive to stick the sucker back on, but when i hit the power button, nothing happens. However the motherboard led is on. So I pop in another working PSU that I had laying around, with the same thing happening.

At this point I figure the motherboard got fried, and ordered a no name gateway oem motherboard. I throw it in, and have the exact same issue. I try shorting the power pins to see if it was my power switch, and nada.

It might be that the processor was killed, but wouldn't the psu fan start up in that case? Or I ordered a dud motherboard with the same symptoms?

At this point I'm just not sure what step to take to resolve the problem. Any advice?

Answer:New Mobo LED green, PSU/Mobo fans won't spin

Run the motherboard outside the case with just CPU and memory installed. See if it starts. If not, the CPU could be fried or you have a defective motherboard. I hope you didn't use the old power supply with the replacement motherboard, if you did, you probably fried the 2nd motherboard

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Relevance 60.27%

have a T7500 that when rebooted, will take anywhere between 10-15 shutdown/startups before getting boot screen. Power button is green and 3 4 stay green when it is attempting to boot. I can't find what error this might indicate... any help would be much appreciated...



Answer:T7500 green power button 3 4 green lights, takes several attempts before getting boot screen

ubearcat,The led error represents ACPI S3 Suspend to RAM Windows Standby State. Try the steps below to resolve.Changing the power management options in the operating systemSometimes just changing the software settings in the operating system power options will fix the issue. Access to the power options in Windows can be done through the Control Panel. Depending on your version and view by settings, you may or may not see a power option link. In that case, look for power options under the hardware category. Once there, create a new plan or modify an existing plan, changing the advanced settings as needed.If changing the operating systems power options does not fix the problem, you can try changing the APCI setting to the computers Basic Input/Output System (BIOS).  Once there, you need to look for Power Management Options. There you will find the different ACPI standby states.

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Relevance 59.86%

i have 2 computers crashed, the motherboard has power, the processors fan is working as well as the video card i suppose is still up, coz its fan is running also. But bios screen is not showing. The reset button is useless...the problem began when i noticed the machines frequently hangs up at restarts its self. and i tried to check the bios setting, it hung up in bios. Somebody please give me a tip to somehow try to resolve this. thank you.
motherboard is ASUS P5P800S.

Answer:BIOS/POST not loading, black screen only, mobo has power.

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Relevance 59.86%

as soon as i put power to the power supply the computer starts without any connections to the front pannel switch and resets the bios as if i pulled the cmos battery out, mobo FIC, k8mc51g 754 socket with an a-power 680 watt power supply not what the board used from the factory im sure,im wondering if the factory power supply had wires and connector to the board like a system fan or somthing to keep the main 20 pin connector from starting the flow of power through the boaed

Answer:Power by-passing switch k8mc51g mobo clears BIOS

a dead cmos battery seems to be the problem ,charged up the old one and now works fine

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Relevance 59.45%

Hello All -I'm posting to the forum as I'm at a complete loss with support. I recently purchased a ThinkPad T450s, which worked well for about a week, but has since failed to boot properly after normal use. The motherboard / system board has been replaced three times by Lenovo support (twice with the depot and once on-site). After receiving the system yesterday from the depot (again after normal use and trying to resume from sleep mode), the ThinkPad won't boot. The power light blinks on and the backlit keyboard lights up for a few seconds, only to have the system shut itself down with a light pop. This cycle repeats with the system attempting to power up anywhere from two attempts to eleven (no BIOS flashes or any other signs of life). I've tried all options noted in the forum and suggestions from support (remove battery, hard reset, etc.), but haven't had any luckAgain, I'm at a loss, and simply want my system to work or be replaced. If anyone has any insight, it would be greatly appreciated.??Thank you!

Answer:Thinkpad T450s won't boot - Power light blinks and keyboard lights up momentarily // no BIOS prompt

Hi ArcadeFire,
Welcome to Lenovo Forums!
Sorry to hear for having same issues multiple times, but again it seems to be a same hardware issue. If you have an onsite warranty better call Lenovo support centre and log the call for the hardware. I guess it?s again problem with motherboard.
For your information, please find the link given below to find the nearest service centre details and the Lenovo contact support details as per your location.
Click here to open a link where you can select the country and get the exact contact support number. I?m sure they will be a great help.
Please post back whether the above suggestion helped you.
Thank you, have a good day.
Did someone help you today? Click on the ?upper half star? at the left side of the post to thank them with a Kudo!

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Relevance 59.04%

I replaced the mobo on my Dell 5510. Purchased from Dell. Sticker on mobo says BIOS ver A05. About every other day I get blue screen and physical dump of memory. My system info says my BIOS ver is A07. How do I go about changing BIOS? Is it as simple as pulling battery for 15 seconds? Some have offered this suggestion but I get a little worried at "friends" advice.

Answer:Replaced MOBO on Dell 5510 BIOS sticker on MOBO says A05, system in still has BIOS of A07

Removing the battery won't change the BIOS version. You need to download the version you require from the Dell site. From Windows you "flash" the BIOS. Take your time preparing for this. If anything goes wrong you will wreck your motherboard.

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Relevance 59.04%

Hi, I've just about had it. I am running a Dell Dimension 2400 with Windows XP SP3. I experienced no major issues until August of 2010. I first became aware of the little game my PC was playing after installing the Shockwave Flash 10 update. Initially, the problem presented as a white screen when attempting to watch Hulu in full screen. A short time after, I began experiencing audio drops while both streaming music via Pandora or while engaged in conversation via the VOIP (non video) side of Skype. I don't recall how, but the full screen/white screen issue disappeared. The problems remaining however have proved more frustrating.

Present day, I still experience the audio problems. For example while talking on Skype to either a landline or cell phone user, I will often (but not always) hear a little pop and the audio will go out. The lone remedy I have found is to close the skype window and fully 'Quit' the program. Upon which, I will promptly hear another pop, signifying that audio functionality has resumed.

While streaming video, whether from Hulu, Netflix (especially) or an embedded YouTube on Facebook, video will play for a few moments or minutes and then will cease, freezing the frame currently showing. For the sites utilizing Flash, the remedy has been 'Disabling' then re-enabling the Shockwave Flash Add-On in Firefox. In effort to determine whether this was a Firefox issue, I installed Google Chrome and then Internet Explorer this w... Read more

Answer:red light, green light. My PC freezes, I lose audio and my streaming freezes

Please perform the following, so that we can get the exact specs of your computer. This will better assist us in helping you more.Publish a Snapshot using SpeccyThe below is for those who cannot get onlinePlease take caution when attaching a text file to your post if you cannot copy/paste the link to your post, you will need to edit it to make sure that your Windows Key is not present.

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Relevance 57.4%

Hello,I did a system build. Asus MB M4A78T-E with AMD Phenom II 965 Black Edition and Cooler Master GX 750 PSU. I followed the connections very carefully. When I boot up, all I get is the green SB light on the motherboard and absolutely nothing else! I am a bit frustrated right now! Any help would be greatly appreciated please. Thanks P.S. Nothing smells burnt whatsoever...whew! But I can't figure out what's wrong???

Answer:Help Please! Only green SB light comes on?

Greetings, Thlorian.

Relax, and start over. Check every step as you go.
Make sure that the motherboard is not grounding to the case.
Connect only the power supply 24-pin connector to the motherboard, see if you get any indications at all.
Make certain that the RAM is installed correctly.
Then, add your discrete components one by one, verifying each step.
If you're using a graphics card, try using onboard video as a troubleshooting procedure.

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Relevance 57.4%
Question: Green Light

I have a Compaq Presario, and on the case it has a neon ligh whenever the computer in on.
Would i be able to change the colour of the light, possibly blue or red.

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Relevance 57.4%

Even when i've fully shut down my pc at night, (but not unplugged from the wall), a green light comes on at the back of my tower near the main cable.It doesn't always come on right away, but can sometimes be hours's even woken me in the early hours with it's unearthly glow coming from the back of the pc! What can it be when everything's shut down?!

Answer:Green light comes on.

Led to tell you power is still at the power supply, its a warning for if you are doing any repairs to remove the plug from wall socket

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Relevance 57.4%
Question: Green light off

I am not sure which subject this comes under but here goes.  I got a Del inspiron 7720 that came loaded with windows 8.  I replaced the hard drive last year with a solid state and installed windows and then before the free upgrade to windows 10 stopped I put windows 10 on it.  
    The green led light was working for months to tell me to hit the FN+F3 key to turn off the touch pad.
Yesterday I noticed that no longer works. 
Nothing I tried has got the green light back on so I can use this function . 
  No errors in device manager. 
I ran the hardware thing when booting by hitting the f12 key but it said no problems found.
  Any idea on why this green led light went off ? and I am no longer able to turn the touch pad off and on.  I would like to just disable it as I never use it but I see no way in system BIOS to do that.  Any tip appreciated.  Tom

Answer:Green light off

I'd suggest you power off system, and then disconnect all peripherals - printer, flash drive, external drive, etc...). Remove AC adapter, battery, and then press "Power On' button for 15 seconds to release Status Flea Power. Replace battery, adapter, and power on system. Hopefully touch pad's enable/disable button is fix now.

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Relevance 57.4%

When I turn on my CPU both the red and green light come on. I have it pluged into a power strip and if you turn the power strip on and off real quick the CPU will come on. If not, the only thing that will come on is the red and green light and it will not boot up.


Answer:Red and Green Light on CPU

Just to check... you mean the cpu as in your computer... not the central processing unit... right? Try using a differnt power strip or non at all and see if that works. Which lights do your red and green leds correspond to? If you are booting both should light up. The green is usually the power led (is always lite green when on... yellow when on standby) the red is usually the HD or IDE led... lights red when the HD or an IDE device is being read/written to.

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Relevance 57.4%
Question: No green light..

old parts..
1GBDDR RAM working
GFX CARD (Working) in other compputers
160gb HD IDE Working
MSI KT4 or 6 ultra noth sure..

I boot and then i get no grn ligth from the moniter and i have never used this motherboard before so i dont knwo its history.. any basic ideas?

Answer:No green light..

plug it into the mains...

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Relevance 56.58%

When I turn my pc on the power light keeps flashing green, but the disc drive still opens and I can still hear the fan !Any ideas on what is wrong

Answer:Green flashing light

Hi Chelseastu and welcome to TSG.

What make and model computer is it ? Laptop or Desktop ?

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Relevance 56.58%

I have a Belkin 4 point hub which is powered from the mains. into the hub is my speedtouch adsl modem, canonlide scanner and a belkin wireless mouse. into the usb sockets at back of computer I have an epson r200 printer and the usb hub. I have tried various permutations of wiring to no avail. Right the problem is that on startup I get one amber light indicator on the hub and to get all three appliances powered up I always have to disconnect the power supply lead to the hub itself. When this is done the green lights come on. Using winxp. this is now getting annoying. when I have to reboot for whatever reason, this problem does not arise.can anyone help???

Answer:no green light indicators on usb hub

sounds very similar to my post earlier with a similar prob and it was suggested that i try what you have to do (unfortunately prob has not reappeared so cant verify) but apparently if it works it is an indicator that the power supply itself is on the way out.johnny.

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Relevance 56.58%

green light flashes on pc tested the powersupply it is good, what could be the problem, the fan will not turn in the pc powersupply but when i test it it turns. need help  OS is window vista, pc is Lenovo 3000 j seriese Amd 64 Athlonx 2.

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Relevance 56.58%

Good day Majorgeeks, I hope this is the right thread for this.
(sorry for my bad english)

My PC restarts for every few minutes then after a few moments it doesnt boot up anymore.

Green and red light stays on and no beeps

I tried isolating each part to see whats causing it.

-no boot
-Green and red light on
-no beep
-Fan OK

-no boot
-Green and red light on
-no beep
-Fan OK

No Processor
-no boot
-Green light
-Fan OK

I tried Google some says its connection problem

Im suspecting its my mobo my PC is more than 5 years i think

Help will much be much appreciated. TIA

Answer:CPU No boot(Green & Red light ON)

Im inclined to agree. If you get no beep without memory in then it doesnt sound like it is even trying to access it. Motherboard would be first place I would look

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Relevance 56.58%

have brand new battery, so figured prob was solved, but when hooked up, the AC adaptor has green light but laptop won't turn on, what could prob be??

Answer:Can Ac Adaptor be bad even if the green light is on?

It's generally a good indication if the light is on then the adapter is ok but you can only be certain by checking it with a meter.The more common issue is with the circuitry inside the laptop - the connector coming away from the motherboard is a very common fault, but once you've checked the adapter then it's a matter of stripping down the laptop. "I've always been mad, I know I've been mad, like the most of us..." Pink Floyd

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Relevance 56.58%

I've had some trouble starting my computer recently and the problem seems to be pointing to the power supply box. Whenever I plug in the power supply cord, a green light begins blinking in the power supply box. Does anyone have any idea what this is or how it can be fixed?

Answer:Green light blinking

How does the PC work after you plug in cord? You are saying that you have to un plug & then plug the cord back in to get in going? explain

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Relevance 56.58%

I just wana know what this green light is that is flashing all the time when I look at the front of my computer. So what does it mean?

Answer:"green" light flashing

One of two things come to mind. Since I don't know exactly what light what you're referring to. It's either A: The read/write activity of your hard drive. Or B: to a lesser possibility the data transfer activity of your network card.I would say you have about a 75% chance it's your hard drive activity light.

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Relevance 56.58%

I recently reformatted and now the green light on my computer is flashing.
any one know what that means
i run xp pro on an amd t bird 1400 256 ddr ram radeaon 64mb ddr video and onboard sound(sis)
the green light has a picture of a lightbulb next to it.
Thanks in advance

Answer:flashing green light

what green light? where is it located?

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Relevance 56.58%

I'm using a p7-1257 it has worked for 2 years and what's happening is the green light is on in the back of the computer but when I hit the power button the fans spin for half a second to a second then shuts off then I unplug and try to plug it back in and the green light isn't on so I have to wait 30 seconds every time I try to power up my hp but it never works the fans spIn then just shut off anybody help?

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Relevance 56.58%

Ok I got a computer that I've been working on and well all of a sudden a noise was coming from the inside of it so today I decided to open it up and checked all connections possible but when I had plugged it back in I saw a small green light flicker and make a I guess a flickering noise... And the machine won't even turn on at all nothing what so ever... If it helps out it's an Emachines T2824.

Answer:flickering green light ??

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Relevance 56.58%

I have an Optiplex 760.  I was looking at the back of the case for a power on/off switch.  Although I didn't find one, I did see a very small push button.
When I push this button a green light comes on, and goes off again when I release the button.  This is with the machine turned off.  I haven't tried pushing it with machine turned on in case I break something!
Can someone tell me what this button is for, please?

Answer:Green Light on Optiplex 760

BIST.   Built in SELF TEST.
Green LED on the back indicates power is available not that the power supply is Ok.

If there is a button with the Green LED this is Built in Self TEST.

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I have green lights on my modem except for the internet light at all. We have called Verizon and they said it could be the phone line. We do have phone service. Tried connecting to internet many times, have shut off the computer and modem, have checked the connections...we are puzzled on what else we can do or check. Suggestions would be appreciated.

Answer:Green light on Modem

Welcome to TSG:
Can I assume that this is a DSL connection through Verizon?
Have you tried unplugging the modem ,let it set for 30 secs,plug it back in?
You did not provide the operating system info,but check device manager,network adatpter,ethernet nic, to make sure that there are no error indications(? !,etc)
What are you using to post here?
Did Verizon or your local phone co run a line check?
If the line tests are ok,my suspicion would be a faulty modem,or a faulty line filter,if DSL.
If DSL,have you tried connecting another phone cable to the modem and another ethernet cable between the modem and pc?
If your ISP supplied the modem,is it still under warranty?

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Ok. NOW... the darn camera-green-light is always on when I startup XP on my brandnew W500. If I get into any of the software preloaded (ROXIO or the lenova camera wizard), it works just fine and will turn the light off; but upon bootup, the light comes on again and stays on permenantly. I can't believe that is how it is supposed to work.... Any ideas?

Answer:green light next to camera is always ON.

I seem to have the problem fixed; or at least worked-around... I disabled a service at startup (from msconfig) called CameraApplicationLaunch..... after I turned that off the light went off. The camera wizard and the roxio software still seem to be fine. Doesn't make alot of sense, but I don't have the "green-eye" looking at me after boot-up now!

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Hello My led which hddused for showing it work, in x60 its five from right side... This led shouldnt just shining all time on green when im downloading something ? cuz my led only blinking when im using hdd. its normal or something broken ?

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hello and thanks in advance,
i have a hp pavilion a307x with win.xp. my electric flickered off and on a couple times. i went to turn the computer on and it did not power up. i noticed the green light in back by the power cord was blinking. i unplugged the power cord and the green light blinked slower. i thought that the battery may be low so i put in another (that i knew was good) but no luck. any suggestions or ideas?
thanks, Greg

Answer:blinking green light


i noticed the green light in back by the power cord was blinking.

Do you have another PSU you can test with?

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Hi All,This is what I am looking for. Example - If a cell G2's cell color is light green, then h2=b2 or h2=1Basically I am looking for a Macro which could assign a number in the adjacent cell depending on the color. I have 2 colors. Light green and no color. All the light green cells should take the value in column B depending on the row and all the cells with no color will take a value of 1. I would really appreciate if some one could help me with this

Answer:=IF(G2=LIGHT green, B2, 1) on excel

Sub GetValIfColor()
Dim lastRw, nxtRw As Integer
lastRw = Range("B" & Rows.Count).End(xlUp).Row
For nxtRw = 1 To lastRw
If Cells(nxtRw, "G").Interior.ColorIndex <> xlNone Then
Cells(nxtRw, "H") = Cells(nxtRw, "B")
Else: Cells(nxtRw, "H") = 1
End If
End SubClick Here Before Posting Data or VBA Code ---> How To Post Data or Code.

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whu wont my home computer come on

Answer:my computer come on but the green light in th

You need to give us some more info than thatDo any lights come onDoes it get to the boot screen Are their any error messagesOr any additional info you can give

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When I try to turn my computer on, I can't do it with the button in front, I have to do it with the switch in the back and the red light comes on with the fan. The disk drives activate but the green light doesn't come up and there is nothing on my screen. I started having problems a week ago where the green light would just shut off and now it won't come on at all. Could this be related to my speakers not working too? I couldn't tell you what kind of computer it is either unless it was right in front of me. My ex-fiance let me have it when we split up.

Answer:Red light is on, Green Light is not

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My PC has packed up. When I switch on the red HD LED stays on, the Power On green LED stays off, and nothing appears on the monitor. (The monitor is OK.) The DVD & CD trays won't open.Cables inside seem to be OK, fans are working, no dust.Any ideas, before I rob a bank to buy a new PC?

Answer:Red light, but no green light

click hereSorry I couln't resist it! -:))

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dell xps m2010 wont start up ,blue power light and bluetooth light stay on,i have been searching posts in other forums as well as this one and i thought i`d narrowed it down to the graphics card,i was right to an effect,my approach was to take the xps apart following dells website documents,while i had the top (dvd drive) off ,i noticed that the graphics card screws were really loose (this was my first job)...i tightened these.The top(dvd drive ) i re-connected ,but propped it up at an angle so i could still see motherboard and parts,(warning!be carefull!!)electric!! ...attached power cable and pressed power button after half a dozen times pressing this it came to life.I noticed my fans were working and thought this might not be my motherboard after all ,no overheating happening...then it froze on windows xp ??it was a start !another 6 to ten times pressing power button it worked again this time not freezing.went into bluetooth with usb mouse and paired keyboard ,made system restore point and restarted .It took maybe 4 times with it being glitchy(freezing ..not powering up) ,but when it does load xp without freezing try restarting windows xp and then it eventually finds its feet!!!my xps 2010 is running ok now.jimb

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My laptop was working fine yesterday, charging and powering on an off normally. It updated without my telling it to. When it was complete (since it said don't turn computer off until finished) I either just shut the lid or I shut it down when it was done. This morning when I wake up and try to turn it on it won't power up. Then I noticed that the power button was blinking, like it is in sleep mode, tried pressing 10 times then holding down power button for 30-60 seconds and still nothing. Next I saw that although the power is plugged in the battery light won't come on. I don't know if it is charging (it could be dead). I tried a bunch of different outlets and that isn't the issue. I also listened to the computer and there is a very soft high pichted noise that dissapears if you unplug it, and that when you hit the power button and it starts blinking, the sounds changes fom high to lower pitch and back again over and over. But no other sounds or fans kicking on or drive spinning. I am pretty sure it isn't the power cord but have no way of checking. And I can't remove the battery without voiding the warrenty. Anyone have any advice, besides calling to have Lenovo send me a box to send it back to Lenovo since it is only 4 months old and still under warrenty?

Answer:Lenovo Edge 15 laptop 80K9 battery light won't come on, power light blinks

Suggest you eliminate problem 1. Do you have spare power supply unit? Worth trying that first. Your battery may be in sleep mode and won't wake up as battery is drained and hence needs charging. 2. You can go to local retailer and suspect a good one (John Lewis) will let you charge it for 30 mins. Ideally go back to person you bought it from. 3. Once you are in use restore to go back to last working point. I have to telll you the support from Lenovo and Microsoft was very very very disappointing. I tried to even return the PC and swop for HP as mine is only 2 months old. However, the answer was send back to Lenovo. Hope you find a way to get it charged  

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Hi. Tonight I had a problem with my laptop. It was in sleeping mode, and when I open the lid there were no mouse function and no touch screen function. So the only thing I could do was to press the power button for 3 seconds to turn it off, but it didn't completely, because the screen turn off, but the power button light is blinking just like when it is on sleep mode, and I'm not sure if the hard drive light was on, off or blinking before this, but now is blinking. I press the power button and nothing happen, I press it for 3 seconds and nothing happen. I even did the HDMI connection to another monitor, but both monitors don't show anything, not even recognize that something is connected to the HDMI port in the new monitor. There is no sound, nothing, just the 2 blinking lights. What should I do? Thanks PS: I'm not sure if it's Windows 10 32-bit or 64-bit. It was upgraded from Windows 8

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I will turn it on and after a minute or two the monitor goes to power save mode and the hard disk light goes from off/blinking to solid on and the power light stays on.

I have reinstalled the operating system and i thought that fixed it. I had SP 1 i installed all of my updates and SP2 and it starting to do it again (it will do it in SP1 but not nearly as often or when i run a flash heavy program: PSP Video or even the Scion website).

It will not do it at all in BIOS as i did every test on the diagnostics page for my hard drive (all pass) though if it turns off it usually turns on and runs dskchk and it wont stay on for that

In safe mode it is also fine it will not turn off once

I dont know what i did last as it was fine then i was gone for a month and I had it unplugged etc., came back hooked it up and it started doing it after a little while

I have taken a can of air to every inch, switched the Flat cord going to the HDD from the Motherboard.

All fans run fine

Thats all i can think of right now ask me anything else you need to know

I'll give this forum a couple of days/a week maybe then i'll take it to a local shop to diagnose it

Much thanks to anyone who has any idea's

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Was experiencing general issues with my windows profile after windows updates last patch Tuesday so I initiated a system restore and let it run today.  After completion laptop turned off (instead of rebooting?)

Pressing the power button: Power button turns white (on) for ~30 seconds, then laptop turns off (indicated by power button light)
no fans
no screen (back-light or otherwise)
no POST codes - beep codes or light codes.  
no other visible activity

During that period nothing else happens, unless I press the power button again. If I do this
The fans spin up momentarily
The system then powers off (as indicated by the white power light)

I've tried:

Disconnect power/battery and hold power button (60 seconds)
Power system on with just battery
Power system on with just wall power
Remove mSATA HD and repeat the above
Disconnect video connector and repeat above
Remove mPCI WiFi module and repeat above
Completely disassemble and remove CMOS battery (tested at 3.1 VDC) for 60 seconds, reassemble and repeat above

All with no change in behavior

I am able to get a light code 2 Amber / 3 White if I remove the RAM module (as expected)
D + PWR diagnostics cycle successfully through a range of colors then nothing

Laptop is 2 months out of warranty.  Any help debugging the issue is appreciated!

XPS 15 9550 September 2016
Other notes:

UEFI Secure Boot was enabled
HD was bitlocker encrypted in Windows 10
HD is currently removed and has not chang... Read more

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We had a power-cut about 3 months ago and my HP desktop would not turn back on. There is a flashing green light at the back of the computer that has never been there before.

I have been really busy and have only just around to attempting to fix the computer.

Any help would be appreciated.

Answer:HP Computer - Green Flashing Light

HP info: (incl. live chat)
No POST guide:

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Monitor will not boot with computer

Just purchased a new system (w/o monitor) and I am in the process of setting it up. I'm using the old monitor from my previous system with no problems until recently. Now for some reason this monitor just won't go active (green light) when the system boots. The monitor just stays on standby (orange light). I reconnected all the cables, restarted the monitor and computer in different sequences, and all attempts have failed. The strange thing is that this same monitor still works just fine with my previous system. What gives??

Answer:Monitor won't go active (green light)

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Hi, I have a T-61. I just found out that the green light that shows up in the lower center of my moniter for volume and brightness has disappeared. Could someone help me to have the green light back on again? Thanks,reg08


Go to Solution.

Answer:Green light for volume and brightness

Are you talking about something like this?  If so, I believe you will need the hotkey driver for your T61, available here:

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Hi guys,

Since the start of last week when using my PC desktop the monitor would turn off randomly. I would switch it back on and then five minutes later it would go off again. Now however when I switch the computer on the screen boots up with the user accounts then goes off instantly. I tested the monitor against my laptop and it seems fine. Would you be able to help? My computer knowledge is very limited.



Answer:Monitor light green to orange

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