XP Activation problem

Dear Sir,

I have XP pro installed in my computer and it has been activated.
It has worked fine for a few months without any problems.

As of yesterday, as the welcome screen comes up with the name of user and
I click on the user name to log in , a message says windows needs to be activated, do you wish to activate it now and gives you 2 options YES and NO

If I click No, the user is logged off and the screen returns to the welcome screen.
If I click YES , a windows appears and says: " windows Xp is already activated, click OK to continue
When I press OK, the screen returns to the welcome screen .

and this repeats itself over and over not letting me do anything else.

Please do you have any suggestions??

Thanx & Regards


Jadan

 

have you tryed to get into safe mode to see if that says it needs activating(pressf8 on bootup)

 

Yes I can get in safe mode.. ok