Well I replaced Vista 64 bit with Windows 7 64 bit and I can say I am happy with this except for 1 thing!
When I start-up Steam and try to play Counter-Strike 1.6 all I get is the darn background, I cannot see the options like New Game, Find Servers, Friends, Options. When I hover over them with my mouse I hear the clicks so I know they are there and I can connect to a server via console (~) but still, I can't see anything but the 1.6 background.
wll i am a ATI user... and yap.. the CS dont work in win7 64bits.. the OpenGL drivers are poor in win7 64 bits but.. if u use win7 a 32bit work amazing... and CS:source is a game based in DX9 not in openGL for this reason CS:S run normaly =)
If "The operation completed successfully" displays, close the Administrator: Command Prompt window to complete this procedure. If "ERROR: Access is denied" displays, repeat this procedure from the top, making sure you clicked Run as Administrator in step two.
I had this same issue, not with build 7000 but with build 7068. I fixed it by turning off my second monitor. It didn't matter whether I had SLI enabled or not, but as soon as CS-Source only had one monitor to deal with it worked perfectly. Hope this helps.