A few weeks ago, I installed IObit's "Driver Booster 2" on my Windows 7, 8, and 8.1 computers. "Driver Booster 2" found a lot of old, very old drivers on all those computers. Somehow (stupidly) I allowed IObit's "Driver Booster 2" to update all drivers for all my computers. No problems on the Win 8 and Win 8.1 computers, but... Since Driver Booster 2 updated the drivers for my Windows 7 computer, that computer cannot shut down - the green light is on, the fan is working. I need to physically/manually turn the Win 7 computer off. Also, I cannot re-start the computer from that state without shutting it down first. I've tried to unroll all the updates for the computer or use System Restore but nothing's helped. Any ideas besides re-installing Windows 7?