Have you been wondering why the print screen button stopped working? Add this key and you should have it back.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media
Center\Service\Video
Value: EnablePrintScreen
Type: DWord (32 bit)
Contents: 0x00000001
BE AWARE THAT THIS SEEMS TO BREAK HIGH DEF!!! USE AT YOUR OWN RISK!!