My desktop just shut off and won't power back on.
- There was no warning or sounds, smells, or problems prior to the shut off.
- The computer seems to be still getting power, the front LED display is still active and this is powered directly from the motherboard.
- From my knowledge the only things that would prevent a computer from starting is a dead power supply, cpu or bad motherboard.
Any idea? I'm leaning towards a dead motherboard cause the fan should still power up if the motherboard is good.
84 Answers
A system that is completely dead (nothing happens when the system is turned on) - would generally lead you to suspect a faulty power supply.
I'd be inclined to try swapping in a different power supply first, or if you were more technically-natured you can use a jumper on the ATX plug and use a digital multimeter to check it's output voltage. (Please use a guide and follow safety precautions etc.)
1I would suspect the PSU still as the most likely culprit - even though it may be able to power a fan this doesn't mean it can power a CPU properly. Get a PSU tester or swap the PSU out for a confirmed working unit to rule this possibility out first before you look at anything else.
Try another power cord and a different wall socket, you never know it might be simple. If it is Not plugged directly into a wall socket, plug it directly to the wall socket, leave out any surge or battery backup if used.
2When your computer turns off with a blurry screen, does not turn back on but is getting power and every thing seems to be alright, and makes a beep sound when attempt to turn it back on but does not turn back on (it makes three beep sounds): it means that the computer has been used for too much of time and cannot work any more you should just wait till the next day or five hours and try again it should work if it makes three beeps sounds dont look inside your computer it may be very hot, so just wait it should work.
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