I recently bought a refurbished Acer SA80 and since have not been able to play minecraft, every time i tried it black screened, closed and created a Java Runtime Error file. I re-installed java and minecraft and updated my drivers. After looking around the web for a while I saw that it might be because my graphics card (an sis 661fx/gx mirage graphics) isn't capable of running minecraft. Is this the case? If so do i need a new graphics card and what should i get if i do?