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blank screen after 2 minutes at BIOs mode

Question asked by henryli on Jul 30, 2015
Latest reply on Aug 9, 2015 by henryli

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.

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