Can I enabling Onboard Graphics card while having a 2nd card slotted

[Rachel9777]

HI everyone,

I have HP elitedesk 800 G3 with onboard Intel (R) HD graphics 530 card, which can drive 2 monitors through 2 build-in displayports. 

I want to set up a third monitor and plug in a graphics card to the card slot. However, when the graphic card is in the slot, only the 2nd works. Onboard one doesn't. Once the extra card has been taken off , on board one works fine.

Does any one know how to make both graphic cards run the same times so that I can use 3 monitors?

Thanks

[old_geekster · Accepted solution]

@Rachel9777 , welcome to the forum.

I believe the problem is caused by the fact that when a discrete video card is installed the Integrated video is automatically disabled.  I can't find where it states this in the specifications, however.  I know this is true in all desktop models.  Here is the Maintenance and Service Guide for the computer.

Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.