I'm operating an HP a630n with Windows XP Home which was factory installed on the hard disk.
The computer is four years old. I had no recent problems until a day ago when after the HP booting process takes place the Windows Log On window shows up listing the user as "owner' and requesting a passwork.
I don't recall that I ever set a password.
The log in window had occasionally showed up before, and all I did was hit "enter" and Windows opened.
Now, when I hit" enter" [or click it with the mouse] Windows indicates that its logging on but then "logs off".
I have attempted using Safe Mode and "last known good setting" but the "Log on" window shows up with both.
Any help would be much appreciated.