PC freezes and hard reset button does not work

oid0r

Honorable
Jan 1, 2014
2
0
10,510
I've been getting bluescreens (multiple different ones) and freezes for a few weeks now (about once every 5 hours of playing games) and already reinstalled windows. When the freezes happen, not even the hard reset button works anymore. Holding the power button still does, however.

Am I correct to assume that it must be a motherboard or power supply problem?
 

oid0r

Honorable
Jan 1, 2014
2
0
10,510
gpu: radeon 7850
cpu: i5 3570
motherboard: asrock h77 pro4/mvp
ram: 16gb corsair ddr3
power supply: 450w (no idea which brand, but some good one)

Nothing overclocked and using stock coolers. No overheating problems as well. Ram already checked with memtest.
I just got a bluescreen for the first time while not playing a game, but closing a chrome tab (page_fault_in_nonpaged_area).

Gonna try switching my ram slots now, but I guess it's either mainboard or power supply.