Hi try booting in to safe mode by pressing into F8 selecting safe mode
then when the profile screen comes up choose Administrator then when
booted up go into control panel user account then create a new account
make it admin then create and see if you can log in or while in safe
mode you can roll back your computer using system restore set it back
before the deletion of the profile.
Second step if the first step don't work is press F11 and boot from
last know good configuration.
Third Step is do a repair install if you have the operating system
disk of the same service pack you're running.Dave