[SOLVED] Computer freezes during gameplay

[Loumier]

First of all, here is my setup, and yes, is somewhat old but still performe good.

Intel I7 3770 (not K)
Mobo Gigabyte Q77M-D2H
2x 2Gb Corsair Vengeance DDR3 1333Mhz
SSD Samsung EVO 850 120Gb (for OS)
SSD WD Black SN750 1Tb (my mobo doesn't support NVME drives, so I have installed using an M2 adapter to PCI-E)
EVGA GTX 970 4Gb
PSU PCYEs 500W 80+

So, about 3 days ago I decided to update my GPU drivers. Everything went well, then I rebooted my computer and imediatly went on a ranked match of R6 Siege. After a few rounds my PC suddenly froze during a round with a loud static noise. I have rebooted, tried to play again and same thing happened. Then I used Bulk Crap Unninstaller to completly remove any trace of Nvidia drivers, rebooted the machine again and after a while the Windows Update installed automatically a version of Nvidia drivers of 6 months ago.
That was fine, this morning I have played Battlefield 5 for about 3 hours without any problems. But now I have played R6 Siege again and same happened. Also I have confirmed this happens with other games such as Dead By Daylight and also happened once with Battlefield yesterday.
What I also have noticed is this only happens during gameplay, sometimes it happens a immediatly after the gameplay begins and sometimes takes a few minures. But if I stay in the game menu, this does not happen.

What I have already tried without having any success on fixing it:

• Cleared CMOS
• Downgraded the GPU drivers
• Verified the temperatures
• Used Steam to verify the integrity of game files

 

[Lutfij]

If the system reboots or shuts off or locks up when taxed, it's due to two things, often;
a| The PSU is incapable of delivering power to all components
or
b| The parts are incurring a thermal issue, lack of airflow or the parts are simply overheating.

Now, how old is the PSU in that build? That unit does not look like it's reliably built.