most of my games crashes for no obvious reason

[Easter_Bunny321]

this problem is really pissing me of, because i'm going to a big lan soon, where i'm gonna play in a bf3 comp

 

bios: 1.9

gpu bios: nv282ms.352

os: win. 8.1 64-bit

the motherboard is rev.(ms-7821)

i also run a slight overclock @4,0 GHz 

my gpu's are not overclocked

 

think the rest of my specs are listed in a spoiler, but i now run 2-way 770.

i had them running in SLI, but i disabled it because bf3 wasn't running very well with it.

the second card is now running physx until i find a way to fix the issue with bf3.

 

what happens is that in almost every game i tested (9 out of 11) is that the screen just turns white and it says the game has stopped working(then i press enter, and the game window disappears)

i can't think of anything else that could be related to the problem, and the problem started about a week ago

 

sorry for my (possibly) bad english, and if there is anything more you need to know to help me solve the problem, just ask

 

[Deletive]

you said your stuck at 4.0ghz on a 4670k. maybe it's not completely stable.

[Wano97]

Remove overclocki and test again

[Nineshadow]

Disable all OC-s and try again.

[Easter_Bunny321]

the oc is stable, before i added the second gpu, i had oc @4,5 ghz around 1,3volts and i stresstested it with prime95 for 24 hours + playing 2 games for 10 hours

 

but i can disable and try again anyway

[Easter_Bunny321]

you said your stuck at 4.0ghz on a 4670k. maybe it's not completely stable.

the oc is stable, before i added the second gpu, i had oc @4,5 ghz around 1,3volts and i stresstested it with prime95 for 24 hours + playing 2 games for 10 hours

 

but i can disable and try again anyway

[Easter_Bunny321]

back to stock frequency, tried running prime95, 3x combustor and bioshock infinite(one of the games that haven't crashed), this worked. kerbal space program also works fine, but bf3 still crashes. the game loads when i'm still in the browser, but when i click to open the game window, it just stops working... warframe AND EVEN SUPER CRATE BOX crashes

[jadwv2210]

Have you tried removing the second card completely and testing again? 

[Easter_Bunny321]

Have you tried removing the second card completely and testing again? 

for some reason  i had problems with EFI-boot when i rebooted, so i changed the boot order back to standard, and after that boot i haven't had any problems, random or what?