I had this exact problem last year. it play fine everywhere, but in my actual living room environment. I replaced everything. I ended up with a new 64 bit computer because of this and the problem still persisted. I eventually narrowed it down to my scanner. it actually worked, but it was giving my computer the blue screen of death.
I had rewired my house from 100A to 200A thinking that something was wrong with my electric (that had need that done anyway, because of my electrical goodies, so I got another benefit out of that) because it all started when when we had a surge that knock the power out to our neighborhood for 2 hours on the 4th of july. it killed my brand new AC, my wife's computer powersupply (I had to buy a new psu and case as it was a sony viao) and my 50 inch jvc TV. my computer was on battery backup at the time (my wife now have one), but my scanner wasn't
the electric company didn't refund anything either
I would leave my scanner off when ever I wasn't using it afterwards, but I would sometime accidently leave it on and get the BSOD.
I am now using an inferior hp scanner now (the 1st one was a microtek 6000)