7 Professional 64-Bit Hanging on Restart, Help

Installed 7 Professional 64-Bit a week or two ago, but now my computer hangs on restart. I get the "shutting down" screen, then it goes black and stays that way, no restart. Cold boot works just fine, so I can shut down and then turn back on, but restart doesn't. Anyone have an idea why this is happening?

Windows 7 Professional 64-Bit
Dell Inspiron 531
Dell Mobo
AMD 4400+ OC'd to 2.6GHz
3GB RAM
Nvidia 9800GT GPU OC'd
640GB Western Digital Caviar Black HDD
250GB Seagate Barracuda HDD
Rosewill RP600-V2 600W PSU

drdrift

Could you go into event viewer (type event in search) and go to the windows log>applications tab. If there are any errors could you use the snipping tool to take a screenshot and upload it to us?

Let us know if you need help either with event viewer or in uploading the snip

Ken

Thanks for the event viewer tip... I get this error upon restart "The NVIDIA Display Driver Service service has reported an invalid current state 32." Is this a driver issue? If so, uninstall and reinstall driver? I'm using the latest WHQL driver from Nvidia (190.62) which I've had installed since I installed 7.

Also, thanks for the speedy responses

Uninstalled Nvidia Control Panel and all Nvidia drivers and system was able to restart normally. I reinstalled Nvidia Control Panel and 190 drivers and system was able to restart normally again... until BSOD in Nvidia Control Panel which caused the problem to start again.

I isolated the problem to the overclocking feature of the Nvidia Control Panel's Performance Tools. The driver is good and the System Monitor, Update Monitor, etc all works fine. When I use the overclocking utility that's included, though, it causes the system for whatever reason to not restart. The overclock is stable for hours under Prime95 and everything else works perfectly. So, I don't know. Thanks for everyone's help, though, I'll keep searching the forums. Search = n00b's best friend.