built my own computer on february.everything works well and stuff but wheneber i try to play a game on steam.my computer freezes when im about to play a game.already re downloaded steam and games.so i thought must be something wrong with steam.so i dont use it.heard about a game called war thunder.downloaded and tried to play it.when in launch.my computer froze.so steam and this game freeze my pc.but other games do not freeze my computer.so far i have played .league of legends,world of tanks.ghost recon.hawken.and crysis 3.those games do not freeze my computer.any ideas to what might cause my computer to freeze?
SPECS
biostar ta990fxe motherboard
amd phenom ii x4 965 be cpu
msi r7770 gpu
xfx pro 550 watt psu
7200 rpm hdd
2x4 gb team extreem dark series ram
windows 8 64 bit os
thanks for the help in advance.will upload a vid and add it to this when i get a chance