system
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Thanks for the help guys 
I know this isn’t exactly a tech support line for computer repairs but your help is certainly appreciated.
I’m thinking if I could just get Avast to scan the hard drive then maybe it would find a virus and eliminate it? Not sure. It may be a hardware problem anyway? Who knows.
I’m going to try Eddy’s suggestion and enter a line in the config.sys (I think) that loads NTFSPRO into high memory. Hope it works. I though that I’d also try a different video card and disable the “Onboard” one currently in use.
I’ll post whether of not I was able to run the scanner.
Thanks again !