PC restarts every few seconds. Makes a weird sound. Need help.

jayhayjay

Honorable
Nov 18, 2015
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10,690
My PC has been stuck into a loop since this morning. I set it to sleep mode last night and when I decided to turn it on this morning, it booted up, worked for three seconds without a post screen or a beep, shut down on its own and kept restarting doing that again and again. The only way to stop it is to power off the PSU but that doesn't solve the problem.

A strange sound can also be heard immediately before the computer shuts down. This strange buzzing sound heard at the 0:02 mark that I'm assuming comes from the chassis' speaker: http://vocaroo.com/i/s1IHA2K0H0EE

I took it to a repair store and they said that it's highly possible that it is the motherboard's fault. The PC is only 7 months old, something that makes things even weirder.

Things I've tried so far that didn't help:

- Booting up without the HDDs or the DVD drive
- Booting up with different RAM
- Booting up with different GPU
- Reseating CPU
- Reapplying thermal paste
- Trying a different PSU

Any suggestions on how to solve the problem? What could be causing it? Should I send it for repair again?

Thanks in advance.

Rig:

- i5 4690k CPU
- Gigabyte GTX 970 WF3X OC GPU
- Corsair Vengeance 16 GB Ram 1600 MHz (2 x 8)
- Hyper 212 Evo cooler + Arctic MX-4 paste
- ASUS Z-97 P mobo
- Caviar Black HDD 1 TB
- Caviar Green HDD 1.5 TB
- Keep-Out FX 700 MU 700 W PSU
- APEX 3620 Vortex case
- Windows 7 Home Premium 64-bit SP1

Everything had been updated and properly configured before the issue.
 


It's 99% your PSU. Borrow one to test with, or, better yet, just get a proper one.
 


You didn't read my post thoroughly. I already tried a different PSU. It can't be the PSU.

 
Sorry about that. Try running it outside the case. Put it on teh box from teh MB, connect only CPU, cooler, one stick of ram and power connectors from the PSU. Start it by shorting the pins where the power button connector would go.
Don't be offended, but a friend of mine got something like this about a year of usage. He hadn't used the case standoffs.
 


No green liquid, no blown capacitor.