ATI Radeon HD 4800 keeps crashing

ON THE DISK MANAGER THE STANDARD VGA GRAPHICS ADAPTOR DOESN'T WORK.I CAN'T PLAY MOVIES WITH MAXIMIZING THE WINDOW.WHAT IS THE PROBLEM PLZ

the problem is either that the game doesn't support lower graphics, the game starts in a high res so u can't see to lower the graphics, there are 2 solutions here but only if the game supports lower graphics, either try to search for the game from the programs tab in the start menu and then you may find options icon or sth like that, or un-install the game and then re-install it, as for the heating of the card you may notice that it has some sort of power slot on it, this is used to plug in a cable from the power supply either directly or using a cable converter that came with it