I've not had a virus in.... years now I think. I dont download Email anymore except to my phone, I dont download any programs from odd sources... I would think a failing HDD would cause the computer to hang, programs to crap out and error out. also if a certain percentage of the HDD is bad, the computer will tell you. hey your HDD is going bad, back up yer crap and contact support.... I cant see this computer having a bad one. or a virus for that matter...

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed