Hi, am not true tech but hope yo'll dont mind me posting.

Got a call from friend: cant get into win (98se) and so go around and try booting in safe and get a himem.sys error message, somthing like: hxd memory accsess or somthing. After this got message saying that himem.sys was corrupted or missing so tried booting form cdrom and just as entereing setup got a message saying somthing trying to write to boot block.

So I think its virus and need some help as have little xp with such seroius infections.