Asus P9X79 Pro: Powers on, then straight off, then on, then off... - Overclock.net

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post #1 of 4 Old 06-17-2016, 01:30 PM - Thread Starter
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Hi,

Tried building a new rig today and failed.

Asus P9X79 Pro
Core i7-3930k
8gb DDR3
GTX 750Ti
Seasonic Platinum 1050w PSU

So as per the thread title, when I power up, the fans spin for about half a second, then the board powers off completely. No VGA, no POST, no warning beeps, just on, fan spins, then off.

Then about 3 seconds later it comes back on again, same thing, turns back off again.

This loop is endless.

Here's what I've tried
- Reseated CPU
- Reseated all power cables including CPU 12 pin: Firmly, over and over.
- No case, cardboard 'test bench'
- New lithium battery
- Different PSU
- 1 stick of RAM
- No GPU, No RAM, just the CPU and board.
- Flash to new BIOS using USB (incredible you can do this without powering on!) Shame it didn't help.

^ All of these things give the same result; comes on, goes off, comes on goes off, no post, no hint, no hope.

Has anybody got any ideas?

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post #2 of 4 Old 06-17-2016, 02:04 PM
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I see that you have tried reseating the CPU. Make sure you have the correct screws, not missing a washer, or have an extra washer in there with the hold down screws. If the CPU is tightened down slightly crooked it could cause this.

Otherwise, no idea. Hope you get it figured out, make sure to let us know what fixed it.
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post #3 of 4 Old 06-17-2016, 02:33 PM - Thread Starter
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Quote:
Originally Posted by Barefooter View Post

I see that you have tried reseating the CPU. Make sure you have the correct screws, not missing a washer, or have an extra washer in there with the hold down screws. If the CPU is tightened down slightly crooked it could cause this.

Otherwise, no idea. Hope you get it figured out, make sure to let us know what fixed it.

Thanks, looks seated enough, although I bought this board used and I'm starting to wonder if my CPU socket is damaged, excuse large images:




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post #4 of 4 Old 06-17-2016, 02:45 PM
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Looks like there could be a bent pin in there..... either way it sounds like the motherboard is cooked
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