How to reenable my onboard graphic card with out a dispaly

ajithms4u

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Aug 10, 2014
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I had a Nvidia GTX 650 Ti graphic card , and ir was not detecting in device manager and no display out put from this graphic card .My Mobo integrated graphic was working properly.
As per some advice forum, i disabled the motherboard graphic card and restarted .
:( No w both of my display output are not working. There is black screen only, how ca n i reenable the onboard graphi card with out a display.