can't login windows xp after running superantispyware

I am working on a friend's PC who has malware galore. I read READMEFIRST and started with Superantispyware after doing all the prep steps. It ran fine and found over 190 infections. When it finished and it requested a re-boot, I did and now I cannot get past the login screen. When I click on either of the two users, it says, loading personal settings and then says logging off. I don't think the guy has his Windows installation disk. How can I get into Windows to continue cleaning his machine?

 

Yes, I tried safe mode, same problem. Also tried last known good configuration twice, and it did not help. Since I have no XP cd, I searched online for other fixes.

I was finally able to log in after researching the problem via google and came upon a fix for the log in loop problem. The fix came from Dan at thinkinginpixels.com; worked like a charm.

I am still following majorgeeks' cleaning procedures and will post my logs as soon as I get through all of them. So far, so good....nor errors, knock on wood.

Thank you for your assistance! Glad you guys are here.