Upgraded to Vista 64bit. Have all my graphics drivers installed. When i try launch a steam game it freezes meaning i need to restart the PC using the power button.

Any help?

wish i could help, ive had vista x64 and windows 7 x64 installed for over a year or 2 now and the only issues ive had is it locking up everynow and again, a simple ctrl+shift+esc /delete process usually lets me restart steam without any more issues

I've not ha much experience of vista (either 32 or 64 bit) as I'm not a fan. I have heard of 64bit having issues with SLI setups - could try disabling sli in your graphics control panel (providing you're not using sli )

i just reinstalled steam + games and will see if that works. If not ill disable SLI. You said you use winamp. you dont by chance no a deskabnd that works for a 64bit os?

reinstall did nothing. funny thing is that i was listening to music whilst trying to load tf2 and the music carried on playing fine. i cant even ctrl+alt+del just have to use the power button

I personally would try looking at your graphics drivers first - current/beta etc.,

I don't use a deskband, so have no idea which work on 32 or 64 bit

drivers did the job