|If his computer is as bad off as stated........open the cd rom tray, put in the OS (operating cd) and reboot. Format the hard drive using the option on the cd and do a complete re install.|
Be sure the cd is the first boot option in the bios.
Leave the mother board alone, as the problem is on the hard drive.
Also tell your friend to Goggle for a free anti virus program after they are up and running
Sounds like he has a rootkit = redirect ,and a bunch of Trojans.