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My computer stopped displaying Digital input but Analog from same videocard works fine

MainerZ asked
Last Modified: 2013-11-08
My Windows XP computer stopped displaying Digital input but by connecting a cable connection for Analog the screen worked fine.  Thinking that the video card likely had failed in it's digital mode, I bought and installed a replacment card ( EVGA 8400 PCI Express 2.0)  Updated the drivers but this also did not display a digital signal.  Thinking then that the digital cable must be the culprit, I bought a new digital cable. Same situation, no digital picture.  The only thing left is the Samsung SyncMaster 191T flat screenmonitor.  Am I missing some other possibility here?
Failure was instantaneous. Worked with digital signal for years. Completely failed while in use.
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