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Computer Crashed and won't restart / boot, even after stripping

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  • Computers
  • Boot
  • CPUs
  • Systems
Last response: in Systems
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April 18, 2013 7:43:18 AM

Computer completely crashed - and now will not reboot or restart at all.

I've stripped the computer down to the MOBO, PSU, and CPU (fan too) all plugged in. The system will not even boot stripped down.

I've ensured that the MOBO, CPU, and CPU fan are plugged in (along with the PSU too). When I plug the computer in, my external LAN slot lights up, and stays lit if I plug a LAN cord in (to me, this is telling me that my MOBO is properly powered).

What else can I try? The computer has worked fine for 1 week now.

Here are the specs:
PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($134.00 @ Amazon)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($64.99 @ Newegg)
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($89.98 @ Outlet PC)
Video Card: Asus Radeon HD 7970 3GB Video Card ($418.98 @ Newegg)
Power Supply: Corsair Enthusiast 650W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($79.99 @ Newegg)
Total: $977.93
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-04-18 10:43 EDT-0400)

More about : computer crashed restart boot stripping

April 18, 2013 7:50:59 AM

I would try reseating RAM and CPU. If that fails to help, I would be inclined to try a different PSU.
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April 18, 2013 7:51:23 AM

well your LAN leds will be lit even without a psu connected. since there is a battery on mobo...

try replacing your psu... even if your psu is working some of its outputs may be burnt/broken to supply enough power to the board or cpu inputs...

by the way... check also the I/O switch on the back its funny but i remember i forgot to turn it on once lol
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April 18, 2013 7:52:12 AM

For the time being, I am not trying to boot with RAM (already tried that, so I removed it for less variables). I did reseat the CPU and its' fan - nothing :( .
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April 18, 2013 8:18:01 AM

Have you tried shorting out the power switch pins on the motherboard?
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April 18, 2013 8:20:36 AM

Jim_L9 said:
Have you tried shorting out the power switch pins on the motherboard?


I'm not familiar with this technique, how does one go about it?
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April 18, 2013 8:30:19 AM

There are two pins on your motherboard that the power button connect to. Carefully take a small screwdriver and with the power supply connected short out only those 2 pins for the power button. This way you will know whether it is a problem with the power switch.
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