WoW automatically turns off my computer
first the mouse stays in the middle of the screen and doesnt move
second if i move the screen it blinks black
then it just turns off and restarts

Maybe it's getting too hot. Try removing dust with air

It does not sound like an overheating issue, as the game does not even begin to rev up.

It could possibly be a corrupt installation or other conflicting software.

I use t have the same issue with WoW on my old laptop... It was associated with overheating

Try cleaning out ur tower with air to remove all dust from the fans & make sure all ur video/sound drivers are current

the tower is calm then when stage one hits it starts to rev up a bit and gets louder until it turns off completly

You might need to update your Video/Graphics card.

as in update drivers or buy new one?

As in "update" so that they have the current setup & are functioning to there full/proper ability

where can i update?

Either ur manufacturer's website (Dell, HP, etc)

Or u can get the from Microsoft's website