After months of hearing my wife nag me I need to solve her computer issue. It will boot up but with no icons..basically a dead screen. After multiple tries it will finally boot up. Then it will crash with a fatal error whenever it feels like it. My unprofessional guess is its a bios issue, due to all the virus programs I have put on in the past. Right now it just has avast, but I'm thinking the damage is done. I've tried to restore it back to another date, but it wont do it. SOOOO i'm thinking its time to format the hard drive. Is a backup disk all I need or do I need a windows disk. Also I have no idea how to wipe it. HELP and Thanks