I am having random screen flashes and then blue screen

Do you know what a ground loop isolator is? A ground loop isolator is a fix for a problem. Not causing a problem. When the grounds of 2 pieces of equipment aren't at the same ground potential then when these two pieces of equipment are interconnected, if the ground wire between them does not have low enough resistance to fully equalize their potentials, there will be an audible hum created at the AC mains base frequency (50 or 60 Hz) and the harmonics thereof (120 Hz, 240 Hz, and so on), called mains hum. I am thinking that putting on the monitor cable is bypassing the ground loop isolator.

essenbe said:

Perhaps you should run it with just the laptop screen. When you run multiple monitors it can cause problems, and with just 256MB of Vram just probably is not enough. There is also the possibility that what you did to the TV sound is causing some type of problems.