My wifes laptop was working fine up until recently. For some reason after it turns on, at undetermined amounts of time, the screen will flutter, or flash a pattern of boxes across the screen. It will then freeze, turn of the screen then turn back on but the resolution is huge. A normal sign-on box goes from 4"-2" to just seeing the corner on the bottom half of the screen. At which point you have to shut down being un able to see anything(everythings way to big). It is sometimes fixed by restarting, not always though. And just the other day it would not find any bootable devices. So we restored it. Fixed it for a day or so now its starting again! Any suggestions? I'm normally pretty good with computers but this stumped me.