I wrote on this forum some times ago for the same problem. I thought it was the video card faulty but after a replacemente I got the same problem and now I am really lost and do not know what to do.
Let me explain better.
I have my new pc since one month
Intel i7 3770 3.4ghz
Asus P8Z77-V LE PLUS
2x8 gb ram Corsair 1866
Intel SSD 180gb
2x HD 1tb and 500gb western digital
Zalman cpu cooler CNPS 9900A Led
PSU Scythe "Chouriki 2 " 750w
and of course a MSI GeForce GTX 660 Ti Power Edition
The problem is that video card when is working makes a really strange noise (they are not the 2 fans, i tried to put them at 100% and their noise is completely different) and besides the noise the games freeze. Sometimes it goes back to windows other i ve to force a reboot.
The noise makes stronger when video card is working more. If i put all the details to low there is no noise and it seems no game freeze. I asked for RMA and a new video card arrived (different serial number so it is another one) but same problem.
I have an old ati sapphire hd 5770 vapor-x. If i put it, of course graphic is not the same ^_^ but at last no stuck no noise nothing.
The only thing that come in my mind is the PSU but actually Scythe should be a good brand and the spec of my psu are the same with other psu of the same level. The only difference, is that i got two +12v channels instead of one like other psu.
Yes, i download latest driver from Nvidia web site for my operating system and then runned the .exe ^^ like usual
i ve also tried the nvidia with fresh windows, just after have formatted everything.
Moreover i ve 2 pci express slot on mobo, i tried both of them but with the same result.
Honestly i ve build so many pc and this is the first time i m having all this. Really annoying