I have a computer with Windows XP Home edition OEM. Its a legit copy of Windows. I've installed this version on one computer. However, its been over 30 days and now I am getting a error message when it boots up saying its not activated, when it is activated. When I choose to activate it gives me the activation screen and says "Windows is Activated". Is there anyway I could get by this or am I screwed and have to reformat with a illegal copy of XP like one of the old computers I have at home?