jumping scroll bars and menus

  CROPP 16:54 10 Jul 06

My brothers computer has a problem with scroll bars and drop down menus. I know it must be a virus or spyware attack but I've scanned with adaware and spybot (both up to date) and the problem still won't go away. A scan with AVG Antivirus came up with nothing.
When trying to scroll using the scroll bars you can not get them to the top of the bar without it jumping back to the bottom. Drop down menus jump about too making it hard to log onto AOL.There are also some strange beeps every now and then.I've turned everything off in msconfig , re-booted but still got the same problem.

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