Windows 7 Cannot See Post or BIOS Screens

DWP

New Member
I have never experienced Startup or video problems prior to this week.
Now there is no video display during POST or the BIOS screens.
Once Windows7 starts, all video and sound is normal.
(Also I have stopped hearing system beeps during startup)


GTX 260 Black Edition video cards have only DVI connectivity.
Behavior is the same for either our Hanns-G HG281D monitor connected via DVI-HDMI cable or
our Asus VW246 monitor connected via DVI

Not being able to see the BIOS screens, I am at a lost as to how to troubleshoot, check the BIOS, or update the BIOS.

How do I troubleshoot this problem.

Windows7 Professional
Asus PT6 Deluxe V2 Motherboard
Two(2) GTX 260 Black Edition video cards
Hanns-G HG281D monitor connected via DVI-HDMI cable or
Asus VW246 monitor connected via DVI
Corsair HX 1000 power supply
 
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