I'm helping a friend fix a broken XP Home installation. We did a repair install, and if I log in to safe mode I can see that everything looks good now. Unfortunately, safe mode is the only way I can log in (can't even use safe mode with networking). If I try to log in any other way, it tells me that the computer is not activated and the grace period has expired. I can choose to cancel (at which point I'm back at the login prompt) or to continue. If I continue, I get a screen with a light blue background and a mouse cursor that I can move, but I never see the activation wizard.
Any other ideas?