i too am having same prob ( did a search and this thread and 1 other came up )
when i built up my case ( nothing to special atm ) on my desk i was using my desktop screen , everything works - goto car , wire everything up - turn inverter on , now i also have ps2 in there aswell . ps2 is plugged into AV1 .
When i turn everything on i can view the ps2 running , then i switch to the PC and turn the case on , following that i can see windows loading , when it finish's loading and goes to desktop i get the "whiteScreen" , i have tryed looking at fewthings but nothing has evailed , so some help Please