Mh never heard of that error. Are you using a widescreen...and when you say that you got an HD...do you mean a TV with a PC connection or a normal PC screen? Most PC screens are allready using HD like formats for a long time.
As for the GPU just look for the name of your graphiccard. Else you can rightclick your desktop (I guess that you are using Windows XP) and select propertys. Mostly their you will find the name of the graphiccard you have installed.
Post some more infos about your system and we might find out whats wrong.
It would be good to know your OS(XP, Vista, Linux, others), GPU, what kind of display you are running (16:9, 4:3, TV with PC connection) and what resolution you have tried.
PS: I have heard that if you are using Vista you can run into a lot of problems and that this error seams to happen to Vista users from time to time...thank MS for their **** of an OS.
Getting proper drivers from your graphiccard producer seams to be the only way to solve that problem at the moment.