Try running the anti-parasite suite offered here:
If this is XP try a System Restore.
Not sure if this belongs here or not, but here goes.
I'm running a home network. Just two computers hooked to a Dlink DI-624 router. I have had no problems with them and everythings has worked great. I have one computer upstairs (DAD) and one in the basement (KIDS). The DAD one is the one that was used to program the router (if this matters). Anyway, I have some folders shared on both computers (several partitions on both). Up until today, I could access the KIDS computer files from the one upstairs and vice-versa. Now, however, when I try to access the KIDS computer files from the upstairs computer it now asks for a password. The USER NAME to connect is dimmed and has KIDS\Guest selected. It allows a password, but I have never entered/configured one. When I am on the KIDS computer, I can still access the folders on the DAD computer with no problems.
Is there any way to reset the password or am I basically screwed?
I have only one account setup on each (administrator). I have checked the DAD computer and found a Guest login. I disabled that and still can not get access to the KIDS computer.
Thanks for any and all help.....