Window XP logon and auto logoff ?

[myhouse]

I can't use my computer now cos it logon then it logoff automatic.

I remember that it have two things before its happend:

1-NOD32 has found an Malware name RunXPro and ask to restart.

2-when resart there is a bootable CD that have a small app to reset password in the CD-Rom then its boot up and I didn't press anything beside of Ctrl+ Alt+Delete to restart pc to take the CD out.

Please help me!!!

[cluberti]

Can you boot in safe mode and logon?

[myhouse]

I tried to boot into safe mode ready but it still logon and logoff imediately.