My dad in his infinte wisdom decided to do a System restore to the earliest date he could find to get rid of Threatfire thinking it was a virus. The problem is after he did so the computer now locks up and he said for me to fix it, when i asked what was wrong he said that (what i said above) and he basically said to fix it, so i was like how hard can this be? Well its not, ive tried different keyboards, wireless, wired, USb and the origional PS2 type, and nothing helps. im at a loss as t hoe to fix this, and god this MAC is a PIA to use. System Specs 2001 SONY VIAO No mods Has a New OS install on it form about year ago, also avast, and threatfire for AV protection. Never had an issue till he wanted an Administrator account.