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Inconsistent problem with CPU light on and system not booting. Other times PC works fine.

Hello Everyone,

Last week I had a problem where my PC wouldn't turn on, the CPU light was on and the system wouldn't post. However I could hold the power button to turn the system off.

Thinking my CPU might have gone bad I took off the cooler and checked the CPU. No signs of burns, bent pins or damage. I replaced it and it worked fine, so I just thought it may have become unseated some how.

This morning I've had the same problem. However this time I couldn't turn my PC off using the power button, so I turned it off at the wall.

I tried turning it on again and it works fine.

My question now is, what is causing this problem. It seems very inconsistent. Even though the CPU light is coming on I am aware that maybe, it could be a Motherboard or a RAM problem?

My system is about 3 and a half years old now and consists of the following components:

2GB MSI GTX 660 Twin Frozr III/OC
AMD Piledriver FX-8 Eight Core 8350 Black Edition 4.00GHz (Socket AM3+) Processor
Asus Sabertooth 990FX R2.0 AMD 990FX (Socket AM3+) DDR3 Motherboard
Corsair 2013 Edition Gamer Series GS 700W '80 Plus Bronze' Power Supply
Corsair Hydro H80i V2
Western Digital Caviar Green 2TB SATA 6Gbs 64MB Cache HDD
Corsair Vengeance RED 8GB (2x4GB) DDR3 PC3-15000C9 1866MHz
SanDisk 128 GB Internal SSD - 2.5" - SATA 6Gb/s



Any help would be greatly appreciated!
Thanks in advance!

Charlotte
3 answers Last reply Best Answer
More about inconsistent problem cpu light system booting times works fine
  1. Best answer
    try cleaning the ram, by removing it and using an eraser to erase metal plate.
    If it doesn't work, try switching the video card to use the mobo's built in if available.

    I think it could be either the ram, video card or the mobo.
  2. Edit: oops
  3. Corbee said:
    try cleaning the ram, by removing it and using an eraser to erase metal plate.
    If it doesn't work, try switching the video card to use the mobo's built in if available.

    I think it could be either the ram, video card or the mobo.


    Thanks, I'll try these when it happens again.
    It's hard to test when it only happens every now and again.
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