New system. 2 wks old.

AMD Phenom triple core BE 720
Radeon 5850 BE
MSI 790GX-G65  motheboard
Win 7 64 bit

Just tried out 'amd overdrive' last night. Tried to move up one slot in the oc (15 increments). Hit apply. Busy signal for fifteen minutes. Closed program. Ran Cpu-z and the clock settings were the same, so nothing even happened.

3 hours later, I shut computer off for the night. Did not shut down, though screen went off. Tried to reboot, system CAME on, no screen. F8 does nothing. Cannot get into BIOS.

Seems I have to reset the mb? There are 3 switches: power, reset, and clr cmos.

http://img515.imageshack.us/img515/3904/pict0018t.jpg

Do I hit reset BUTTON, with power off, or with power on? Or do I hit clr cmos with power off? What's the difference between clr cmos and reset?

I can't believe that AMD puts this 'overdrive' software on the front page RIGHT next to essentials like Catalyst suite, bragging about how safe it is, and how easy it is. Everything I read now is about how it doesn't work properly. Overclocking can be dangerous and damage hardware.  It's possible that you cooked something in your attempt.