pc crashes when gaming

Blackmor2237

Honorable
Jan 3, 2014
4
0
10,510
Hey guys,
any chance of some advice?
My pc keeps crashing when i play games...
i thought at first it was over heating but i bought a liquid cooler and its still happening.
sometimes the game just freezes, other times its been a full system crash, with stop codes given too.
before either kind of crash i hear a faint bleep like a POST but quieter.
three stop codes i have are f4 f7 and the dreaded 127

Asus M5a78L-m/usb3
750w PSU
GTX 660ti
8GB Vengeance DDR3 1600MHz
AMD 6300 3.5GHz
i should also mention that none of my parts are over clocked
I have ran memtest extended for 10 passes with no problems, a 12 hour prime95 test which was successful with no errors
please help!!!!
 

tsd16

Distinguished
Jan 11, 2008
333
0
18,790
is your video card getting enough amperage on the 12v rail? wattage isn't everything. If you had a 3000w PSU that only provided 10a on the 12v rail and you needed 50 it would not work. THe reason it rears its head in games is that is when you Vcard starts increasing its power demand. If that isn't it, Im kinda at a loss.