My video card is ATI Radeon HD 5700 series (as displayed by Catalyst). It has no problem under windows. But the video card turn off monitor after 2 minutes in BIOs mode (and also any other non-windows mode). This makes it impossible to restore my computer from backup since the display will be shut off before I can select which one to restore. And I could not run many other non-windows programs, like linux based disk image software since blank screen happened, too. I searched the web and could not find similar problems. But it is happening to me. I really want expert helps from you. Thanks.