Weird behaviour (new build)

[calikberil]

Hello eveyone. I've had this new build for the last 5 days and I have experienced a weird reboot a couple of times. Both of them happened while running a game, ALT-tab to the desktop, trying to open Chrome and then the computer rebooted itself (as if I had pressed the reset button). Both times the computer had been running for several hours already and I had played for quite some time without issue.

Temps are fine and the stress test seem OK too. Could it be a PSU problem? Maybe software related?

Thanks in advance.

 

[okcnaline]

Are there any files in C:\Windows\minidump?

 

[calikberil]

Are there any files in C:\Windows\minidump?

No files. Actually the folder doesn't even exists. BTW, I'm using W10.

 

[okcnaline]

Specs on the computer?

 

[calikberil]

Specs on the computer?

It's an i5 6600K with an Arctic Liquid Freezer 120, Mobo Gigabyte Z170 HD3P, 2x8GB 2400 DDR4, GTX 670 DirectCU II and a quite old Soundblaster Audigy ZS (I've had this one for over 10 years). There's also a Samsung 840 SSD and 2 HDD (one brand new 2TB Toshiba and an old Barracuda). The case has two fans apart from the Artctic ones. All of the old components I had them installed in my previous build and were working properly.

Edit: I forgot the PSU: a Cooler Master G700

 

[calikberil]

I got two new reboots while transfering data to a tablet. No other programs running at that moment. I ran a memtest and all came back fine. Any ideas what could I check next? I'm running out of ideas...

 

[okcnaline]

Try a different PSU.