shutdown

My computer refuses to Shutdown/Reboot. I exit Windows (64bit Win7 Home), it goes through the normal shutdown process (exits windows, goes through "Shutting down" message, the screen goes black,) but the computer never shuts off. Lights & fans stay on (as does the Num Lock LED on my keyboard.)...

:usa::andwhat:

:usa::up:

:usa::andwhat:

:usa::eek::insanity:

I'm trying to install XAMPP and have run into the following errors when I try to start MySQL 5:16:18 PM [mysql] Error: MySQL shutdown unexpectedly. 5:16:18 PM [mysql] This may be due to a blocked port, missing dependencies, 5:16:18 PM [mysql] improper privileges, a crash, or a shutdown...

:usa::rofl:

:usa::eek:

:usa::andwhat:

:usa::insanity:

:usa::andwhat:

:usa::insanity:

:usa::insanity:

:usa::eek::insanity:

:usa::eek:

:usa::andwhat::insanity:

:usa::eek:

:usa::eek:

:usa::insanity:

Sleep checkbox is missing from shutdown settings: and so it doesn't appear in start either: and not in power plan settings: also, not in advanced power plan settings. Help appreciated