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My computer won't turn on but the light on the motherboard turns on when i swicth the power supply on. I've already tested the power supply on a different motherboard and it works just fine. I've also tried shorting the two contacts on the motherboard that the power switch connects to still no sign of life,which rules out the power switch so Im left to conclude it might be a motherboard problem.

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No its not motherboard problem. you should remove your RAM and reinsert it again. your problem will be solved....okay

Posted on Sep 03, 2010

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Try reseating the RAM modules, if it still doesn't work, remove the RAM and test the RAM in another computer or at your friendly computer store.

Posted on Sep 03, 2010

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1 Answer

Computer won't turn on.


There must be a problem with your power switch on your computer casing, or motherboard or power supply.

Detach your power supply and try this, to check if your power supply really works. If the auxiliary fan will turn, your power supply is good
25627818-lfqggqo5gl3n2v4xynrvsb5u-5-0.jpg Testing your power supply and motherboard as seen on photo
25627818-lfqggqo5gl3n2v4xynrvsb5u-5-2.jpg If the cpu cooling fan and power supply did not turn the fan, but you have checked already the power supply that is working then you can conclude that your motherboard is need to be replace. But the power supply and motherboard and working, meaning to say your computer casing need to be replace or try fixing the contact of the switches attach to your casing.

Have a good day.

Apr 04, 2015 | Dell Studio Xps 9100 Desktop Computer

1 Answer

My Acer Aspire M5100 get power but will not turn on


Does the CPU fan come on ?
Does the power lead that plugs into the cpu fan on the motherboard supply the required voltage ?
This one is a bit harder and once you check it you most likely need to apply thermal paste - but is there sufficient thermal paste between the CPU and the heat sink on the CPU ?
Does the power supply box in the tower case have its fan spinning when power on ?
Is the motherboard bent ?
I have seen this one - poor installation with different sized mounting screws. When motherboard gets hot the motherboard went faulty.
Some motherboards need a rubber insulator under the screw maybe there is a short under one of the mounting screws !

Mar 12, 2017 | Acer Aspire M5100 AM5100-U5313A AMD...

1 Answer

HP Pavillion a1514n Won't Turn On


Yes even with the green light on it could still be the power supply. Have you pulled the power, opened the case, and pulled the BOIS battery? Could be the BOIS needs to be reset. You might also pull all the memory chips, turn it on and see if you get a beep code. I have had that happen in the past. Then I would replace the power supply (if you have an old one laying around use it to test, with just the MOBO plugged in). If the power supply fails, that leaves only the mother board as the issue.

Good luck, I hope one of these suggestions works for you.

Jun 29, 2012 | HP Computers & Internet

1 Answer

HP Pavillion a1514n Won't Turn On


Hook a monitor to the video output, if no change! the video graphics chip is bad located on the motherboard.

Jun 29, 2012 | HP Pavillion dv9740us Notebook

1 Answer

Shut off won't turn back on


how long have you waited since it shut off? it may be overheating. if you've waited for a while and it still won't power up, you may need to test the power supply. if you don't have a power supply tester and most people don't you can remove it from the case and take it to any pc shop. they may charge you a couple bucks but most shops won't do that. if it's bad it will need replaced obviously, if it's not let us know :)

May 06, 2012 | Dell Vostro 320 Desktop Computer

1 Answer

Custom computer build, foxconn motherboard, computer wont start


Not trying to be condesending but start simple and work your way up.
1. strip dow board to;
a. known good older processor
b. known good single memory stick
c. known good power supply
Test
move memory one slot over
Test
Move memory over one slot
test
move memory to last slot
test
You have tested the variables if still not working you have a bad mother board.
contact foxconn for replacement.

Feb 28, 2012 | AMD Computers & Internet

1 Answer

ECS RC410L/800-M (V2.0) motherboard won't boot up. lites the fans and system lights, but no go. replaced video, CPU with 800 fsb from 533 existing and cleared cmos, still nothing. 533 processor creates...


A bad Power Supply with a weak voltage rail, will produce the symptoms you've just described.

1) IF all of the LED lights were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use from 51 to 125 Watts.
Just depends on what Processor it is.

You press the Power On button. The first chipset (Integrated Circuit) to receive power is the BIOS chipset.
BIOS detects what devices are installed, does a Ram Memory count, turns the Processor on, and hands the computer over to the Operating System.
(Windows XP is one example of an O/S)

Have you tested the main voltages of the Power Supply?
A) The 3.3 Volt power rail
B) The 5 Volt power rail
C) The 12 Volt power rail

(12 volt rail must be 11 volts or more. Less = new Power Supply)

Post back in a Comment.

Regards,
joecoolvette

Oct 28, 2011 | EliteGroup RC410L/800-M (V2.0)...

1 Answer

I've got an intel db43ld that won't post. The green and red LEDs on the motherboard are blinking. I've tried to replaced the motherboard, memory, and power supply and the lights are still...


Test the leads that attach to your ((hard drive from the motherboard)) or replace all the leads that attach to your hard drive including electrical extensions + IDE,SATA and the ones that attach from your ((motherboard to hard drive))
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they could be faulty a computer needs its connections needs its connections continue its cycle and to have an end so any faulty leads will end up with a computer error
hope this helps

Aug 30, 2011 | Computers & Internet

1 Answer

Dell 2400 desktop pc will not turn on. Mother board flea led light does turn on.Tested power switch and wiring okay.I did swap power supply pack from a good working 2350 Dell pc same problem any...


Try to remove all components all drives (hard drives, cd/dvd roms, floppy drives, etc), all additional cards (modem, video card, sound card etc), remove the memory. Just leave the motheboard, proc and power supply. Before disconnecting everything completely discharge power by holding down the power button while the computer is unplug from the power. It should clear the flea light on the motherboard.
Test it again with just the motherboard, processor and the power supply. If still no power then most likely it is the motherboard since you already put a known good power supply. Motherboard has higher failure rate than the processor. You can swap a known good processor if there is.

Jul 25, 2011 | Computers & Internet

1 Answer

Try to turn on computer and the fan blows, but light jiggles and nothing happens. Hard drive shot or processor or ...???


Sounds like the power supply or the motherboard. If you have another computer available, you can test the power supply. Just "borrow" the power supply from the other computer. If it still won't come on, then the motherboard might be bad and you'll need replacement.

If you swap the power supply and the motherboard is bad, you will not hurt the working power supply. The motherboard is already dead and won't feed back to the working power supply.

Also, if you have flashed your BIOS recently and it has not completed successfully, you might have a dead motherboard and you will need to replace it. You would know if you flashed or updated your BIOS chip.

Hope this helps!

Oct 26, 2009 | E-Machines etower 600is PC Desktop

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