Win7 64-bit black screens?

All my casual games like Peggle when I execute, the screen goes BLACK like it's OFF, and keyboard is locked up, I am dead, reboot and restarts fine, but try another game, same thing, any ideas?
Legends of Norrath (standalone) and EQ2 both work fine.
I just installed Win7 Home Premium 64-bit a few hours ago.
tia!

More info: No ! in device manager, and I have 6 gigs of RAM, video card is 8800 GTS 512, I have the latest 64-bit nvidia driver and audio card driver (TB Riviera) installed.

Peggle now working, but I have to: right click shortcut | Troubleshoot Compatibility and go through it's motions, every time, it says incompatible at the end with ! but it plays as long as go through that TC!
Very very odd! (If I dont use TC it too black screen crashes)
Peggle Nights, the sequel, it black screens no matter what, go figure.

Nothing by eGames that I tried works with Win7 64-bit, the TC is unable to load any of them.
Still got plenty of complete crashes, M$ needs to fix that!
Once though I was listening to an MP3 and that song continued until it was over even though the system had black screen/kb lockup.
Anyone?