can't log in to computer

So recently after installing a program called VMWare, I'm having trouble logging onto my laptop. Trying to fix it doing what I can without having to reformat my hard drive.
I'm using an HP 6515b laptop with windows xp pro sp3, and it uses HP's ProtectTools as the credential manager to log in.
Before I installed VMWare, everything worked fine, but after I installed it, something popped up saying there was an error with lsass.exe and forced my computer to shut down.
Now, my computer will bring me back to the login screen, however when I try to scan my finger print it says "There are no fingerprints registered yet" (even though I already registered them months ago and used them regularly). When I try to log in manually and type in my username and password, I get the error message "The system could not perform the requested operation. The authentication server Master Keyset is not configured properly. Please contact your system administrator" whenever I try to connect to "brad (this computer)" or my other domain.
Any help would be appreciated.

I don't really see anything helpful on this...I suspect you are going to have to do a recovery/restore of the system.

http://h20000.www2.hp.com/bizsupport/TechS...eriesId=3368537

Louis

yeah.. already googled it and couldn't find anything helpful, just trying to see if anyone else has any other ideas outside of reformatting my hard drive.

Solution:

To Login, do not use the fingerprint scanner.
Hit CTRL-ALT-DEL

Click on the 'More' button
check "Do not logon to Credential Manager"

Now type in your password and hit Enter.
You will be able to logon to Windows.

(You can register your fingerprints again and it should work.)