Rainbow Screen

Terry- I returned my second 7720 in February after two weeks with A12 Bios (1st machine review is on file). On the second machine I had problems with screen resolution quality from the start, then had to remove/reinsert battery to get machine to start up. Soon after I had the blue screen and incorrect shutdowns. Anyway, the final straw was the rainbow screen I got when I moved the mouse after the computer went into sleep mode after 20 minutes of inactivity (lid open). I thought Dell might want to see it....