Am running win2000 onmy PC, with no prob. Have tried to put second HDD on computer, for backup reasons. When Started machine the new drive was seen but I was told to reboot due to an unforseen error. When it came to the usual logon screen and I put in my user name and password the screen went clear and asked for them again. I cannot get any further than this screen. Sometimes it it is 20 sec before this prompt comes up again. I have removed the second HDD and the fault is the same. I have tried everything I know to solve the problem. All user names and pass words do the same. If I spell the password wrong then the usual not recognised error comes up. It will not let me boot up in safe mode or boot to DOS. I have also tried to repair 2000 frm the setup disks to no avail.