Could be Windows 7 fault?

Recently after I installed windows 7 x64 build xxxx sometimes when i play a game my monitor turn black acting like he enter in stand by (green led turns to yellow) and the computer crush. When this error happens also the PC make a strange noise for 2-3 seconds. After that and during the sound all freeze :| Restarting the computer won't bring up the monitor. I need to unplug it from Power and reconnect it after 4-5 second and start the PC. doing so the PC turns on normally. Dunno what could generate that error, it's really ennoying.

Yes, i notice this after installed windows 7 x64 so i believe it's his fault? using XP SP3 x86 i didn't encounter this error.. but i installed 4 gigs more of DDR2 (6Gigs) and i need to change to x64 liked Windows 7 and i don't want to go back to XP, can someone help fix my error?

The error appears randomly ... i played 2-3 days bionic commando until i finish it and the error didn't appear even once, today i installed Wolfenstein played like 1 hour nothing happened, I saved and exit did some stuff around the house and when i entered again the game played like 30 minutes BOOF the error appears..

Thanks, Alex.

This happened only in games like Damnation, Silverfall, Titan's Quest, Wolfenstein, maybe more i didn't play. When i surf the internet writting a document, playing warcraft 3 never happened.. maybe this intel helps too.. thanks

Did you mix ram? If so then dont. they probably have different settings, and you probably arent running enugh voltage to the ram. Take the new ram out if problem is gone then its a ram issue not win 7 issue.

i disagree, people like you should get banned for being arrogant and rash, not all of us are born with all the knowledge of the IT.. it's a large domain so now and then we need each others help, so shut up mister arrogant smart azz.

If the memory doesn't turn out to be the issue I am leaning towards a power supply issue or possibly a failing motherboard. I would verify that you have your chipset drivers loaded correctly as well.

ok, i reinstalled windows 7 build 7600 x64, the problem persist... i'll go back to xp, my experience with windows 7 was very bad ... i'll never use it again ..

thanks to all lads for trying to help!

Besides... going back to XP will make all that other RAM you bought useles...

Are you using some sort of file protection ?

I had this happen to all my games until I figured out that my system was crashing due to my use of Comodo firewall, once I turned off the file protection feature (just wanted the firewall out of it anyway) my games worked fine again

Edit: The one game that worked fine before I found out what was going on was FarCry 2..... Probably caused me to take a day longer to figure out due to that game working just fine.