can't login to Windows XP

Hello everybody,

 

This is my first time on the forum and I have what I would consider a major login problem!  I have a dell inspiron 8600 with windows xp home edition.  i recently went on the dell website and updated the sigma tel audio drivers and the broadcom network card drivers.  i restarted my computer and everything worked fine, so i decided to delete the original manufacturer driver folders because the new drivers i installed were placed in "c:\program files\sigma tel" and "c:\program files\ Broadcom".  the folders i deleted were "C:\drivers\audio" and "C:\drivers\network".  I restarted after this and the windows login screen where the password area usually pops up just stayed blank.  I am basically stuck at a windows login screen that has no option to type in a password or turn off the computer, so i cannot access windows!!!  i tried safe mode, debugging mode, and everything i could think of, but everytime i would be confronted with a login screen with no area to type in a password.  is there anyway i can get back into windows without performing a system restore!!?? please help me!  thank you so much

 

JP