|What is an MW2?|
1- Do you have a PC or laptop?
2- Does it restart at any time after it shuts down?
Try looking in the event viewer and see if you can see a problem there.
How old is the PC?
There are a numerous amount of things it can be...bad ram, weak and failing power supply, over-heating, etc
Some HELP in posting on Computing.net plus free progs and instructions Cheers