Re: Laptop freezes on XP login screen
Probably a driver conflict within windows. If you've installed something new as of recent roll back the driver or uninstall the program. If you haven't try booting into safe mode and using a restore point back to an earlier date before this error started occuring. If that doesn't work if you have XP you can do a repair installation of the OS.
IF that doesn't work, you'll more than likely have to reinstall the entire system.