Unstalled sp2 now i can't login

[LinkTheHero]

Hi ive jst unstalled service pack 2 on my Windows Xp Media Center Editon pc. and when i get to the login screen nd try to login it asks me to activate windows. now this has happend before so i used the serial on the side of my old comp that had a preinstalled media center but now i hav a problem i hav style xp installed and the theme im using i can't see the writing and the next botton and all that on the Actavite windows screen lain: the version i have on this pc was installed from a cd. so can any1 help =]

 

[Doomulation]

You can press ctrl+alt+del twice to use classic login. It's also not a good idea to install or uninstall any service pack with Windows. Instead, you should slipstream it with Windows so that it's installed when Windows is installed.