when I type net stop wuauserv it teel me ...the service name is invalid.
Click START then type services in the little box for typing at the bottom of the start menu.
hit enter.
Should be presented with a list of services.
look for the one called "wuauserv".
- is it started or stopped?
if it is stopped go into C:\Windows and rename the folder named SoftwareDistribution to SoftwareDistribution.old
if is is NOT Stopped, highlight it and go up to the top left and click stop.
then go and rename the folder.
Then when it is renamed you can restart it the same way you stopped it except click start this time.