My names Turkish,
One other option would be to scan the Hard Drive from another computer, if it is on a network. If he does not have a network, then you could always pull out the hard drive and connect it to the Ribbon with the Optical Drive on another computer, which has Norton, and scan it there.
Take Care,
Richard
P.S. If the computer is crashing, it is not a good sign to begin with and a fresh install of his OS, might be in order.