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After the computer is plugged into the discrete graphics card, the computer screen is black.

  

The computer is plugged into the independent graphic card
, the computer screen is black.



This is because your graphics card is not in contact. Ok, first remove the graphics card and wipe the graphics card's gold receiving finger with the skin, then brush the card's card slot with a brush, there may be dust, insert the video card several times, and then connect the display
,

If this can't be solved, then your graphics card is broken, or the rust inside the graphics card slot needs to be repaired.

There may be different sockets, you can't use the video card.





This is not related to Power
, it may be a problem with the compatibility of the motherboard
(or system). Install the corresponding driver.






Is the motherboard not supported?





This problem is caused by incompatibility





It is best to re-do the system < Br>




Look at the driver to see






Is your driver installed? Br>





Is it incompatible?






It seems to be a driver problem





In theory, this is impossible. It is best to find out where to buy the graphics card. Is there a problem?



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