Hi,
I am having a stupid problem that is really making my life hard. Me and my team are trying to release a Computer game tonight and my computer holds allthe source code!! Anyways here's the situation I had Windows XP Home Edition for like a year, and today of all days decided to upgrade to Windows XP Professional and it was going fine until I got to the login screen. After I tried to type in my password I got this error: A problem is preventing windows from accurately checking the license for this computer. ERROR 0x80004005. If anyone could please help me out it would be greatly appreciated. Thank you!!!
Don't have an answer just a comment ,when upgrading you allways backup important data ,you did this right ,giving that you had lots of important data on you PC .