I have a Windows XP machine with SP3. I am unable to login the PC. When I start the PC it ask me for User Name & Password but, as & when I press enter it shows me windows in logging & saving your setting. I have tried to login with Local Administrator, Domain Administrator & even with user account but, i have failed to login. I have even tried to start the PC with safemode, safemode with command prompt & even with last known good configuration but in all this option i have faced the same thing.