My PC which i got in May has been fine up untill just lately. It has started asking me to activate windows, which is strange because up untill now it has been activated. This seemed to start after i did a bulk of updates through windows update. After that I did a couple more updates some time later, it became activated again... for all of 10 minutes(No restarts or anything after it said it was updated). My computer was store bought, brand new with windows 8 already on it so I have no windows CD and have no idea what my activation code is...