[Acrylic-bob]

One other thing which, thinking about it, might have some bearing on the problem. When the worm struck I tried starting up my virus program AVG. But this made the problem worse and seemed to cause everything to crash.

Now, when everything is booting, AVG scans, possibly the satrt menu, and there is nothing I can do to prevent it doing this. If avg is the infected program could it be this that is causing explorer to report a page fault. And if, through DOS, I deleted avg*.* would that perhaps make a difference?