Troubleshooting what more steps before buying/replacing hardware

[trekky]

ok so my friends PC is having some issues
it BSOD 2 times in the last week and froze/crashed today and he claimed his GPU drivers Failed

Specs
Asrock Z68 extreme 3 gen3
intel 2500k @ stock (stock heatsink)
MSI 560TI @ stock
Kinston DDR3 8gb Ram (2x4gb)
agility 3 120gb SSD
500gb HDD
windows 7 x64

did Clean install of GP drivers IE uninstalled and got lastest
so I Ran Furmark and after 15mins in topped at 88c with stock setting (IE fan also)
Running prime95 got his CPU to 75c on all Cores

I will be running Memtest 86+ when I can
also did a SFC /scannow but it found nothing

any more ideas? im thinking 2 things Motherboard or GPU I have a Spare 560ti and could test out his system for a week or so

 

[Witchdoctor]

Could be the drivers ?
How old is the OS ?

did not see a PS listed, could be a power issue either failing or falling short once heated up due to a poor efficency curve.

you never know for sure, but that is a few other thing to look at

good luck

 

[trekky]

PSU
I think its like a 700w OCZ I would have to open it and check it out however it
that could maybe be it
it takes it air from the Case not floor Vent

OS is 2-3 years old
Drivers are new that's the first thing I tried