Did my CPU or Motherboard break? (i7 6850k, Asus X99-AII)

vulcanspirit

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Aug 26, 2010
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Hello,

So basically, one day, a few weeks ago now, I was sitting at my PC (https://uk.pcpartpicker.com/list/9zVyr7) and I had what I thought was a power cut. PC powered down straight away, no blue screen, no warning. Turned it back on and I had no post. Wouldn't load, no bios, nothing. Then it started to power up, then down, then up again. Sometimes it would stay on but nothing on screen and other times just off for good.

Bit of a background. I did overclock my CPU to originally 42x and then dialed back to 37x (3.9 GHz) after a few blue screens. Temps were never an issue however so I was always curious as to why it was crashing. I'm not completely new to overclocking and I watched multiple videos as well just to make sure I wasn't going mad, keeping the overclocking under safe parameters. I had been running my PC on 37x for at least 2 months without error, and the computer is roughly 6 months old. It does come under heavy use as I am a YouTuber and render multiple videos whilst playing games daily which often takes CPU to 100% for over an hour at a time.

Either way, I took apart my computer and tested parts including PSU which was fine (and is running the computer I'm sitting on). I also re seated the CPU and nothing really smelt like burning? Came down to the motherboard or CPU basically and that's where I'm stuck. I don't want to invest in another x99 motherboard just to test it as I really don't want to waste money if my other is ok. The only other question is the ram, because I don't have another DDR4 mobo to test on but I can't believe that would cause a PC to power down like it did.

So, after all that I'm here for your guys opinions. I personally feel like the CPU is fine, and the motherboard is at fault but I can't be sure so here I am. If you need anymore details let me know.

Cheers all!
 
Solution
might sound goofy but with the computer plugged in and the power off hit the MemOK button and let it do its thing. had issues with a 1366 board and that cleared it up. if anything else its worth a try.
Hit the bios reset button on the back of the board. 90% of the time when an asus board power cycles it because of a bad setting in the bios.

I would take everything back to stock settings and make sure the board boots back up just to make sure.
 

vulcanspirit

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Aug 26, 2010
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18,510


I've reset it already with the pins and resit the battery. By back, you mean the usb panel? Pressing that button did nothing either. Also, no error code ever on the mobo.