TheLantern,
It appears as this issue is an intermittent electrical issue causing a garbled screen. There are also issues with some communications processors. The claims are only valid for specific Dell, HP and Apple systems.
Diagnostics and intermittent issues are problematic. This is because everything appears fine right up to the time it isn't. For this reason PC-Doctor will not uncover this particular defect unless it is exhibiting itself at the time of testing..
There are detailed instructions on the settlement site as to finding out if your Dell, HP or Apple system is included in the settlement. I suggest you follow these steps if you have a system that is suspect.
-Fred