In a situation that you tried to restore your system, but it won't launch System Restore (viruses can corrupt it) and tried booting in Safe mode to try System Restore, but still won't launch there is an easy solution,
First create a system repair disc by selecting Start, type system restore disc and press Enter and follow the prompts. Only one CD-R will be needed and an optical drive is required.
Then boot from the CD (press key when "press any key" shows up), then follow the prompts until you get "Choose a recovery tool" page, then select system restore.
Tha