I have a emachines desktop..not sure of exact model? It was fine a couple days ago then I tried to turn it on yesterday and all it will do is give me a screen that says " a disk read error occured press ctrl+alt+del to restart" when I do that it beeps and sounds like its going to start up then gives me a screen that shows the big E then says del: enter setup f12: boot menu... can anyone please help??