Second GPU not detected on computer? Here’s how to fix it

Ivan Jenic
by Ivan Jenic
Troubleshooting Expert
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  • Many gamers have reported that their PC doesn't detect their second installed GPU.
  • This can have an impact on gaming if it is the dedicated GPU, so we covered it in the article below.
  • To learn more about fixing similar hardware issues, go to our Laptop & PC Fix Hub.
  • The solutions to even more PC issues can be found listed on our Troubleshooting section as well.
Second GPU not recognized

Some gamers have complained over Microsoft forum that they’re unable to play games on their PCs because they have two graphics cards and the PC only recognizes its onboard GPU.

What can I do if my PC doesn’t recognize my 2nd GPU?

  1. Check if drivers are up to date
  2. Disable onboard video Device
  3. Disable onboard GPU in BIOS
  4. Additional solutions for graphics

1. Check if drivers are up to date

We’re going to start slow with solving our problem. So, let’s check if drivers for your PCI-Express graphics are up to date.

This may look like an obvious solution, but it is very common because we’re often too busy performing other tasks on the computer and we forget to update our drivers.

In case you don’t know how to check if your graphics card drivers are up to date, do the following:

  1. Right-click on My Computer and go to Properties
  2. On the left side of the screen click on Device Manager
  3. Under Display Adapters find your PCI-Express graphics card, right-click on it and go to Update Driver Software…

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This process will update your GPU driver software in case it isn’t up to date. If your drivers are up to date, and you’re still facing the same issue, try some of the next solutions.

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2. Disable onboard video Device

Obviously, you put another graphics card in your PC because it is better than the onboard GPU.

But sometimes, the onboard GPU is the one preventing other graphics card from normal working. In order to solve that, try to disable your onboard graphics card.

Here’s how to do that:

  1. Right-click on My Computer and go to Properties
  2. On the left side of the screen click on Device Manager
  3. Under Display Adapters find your onboard graphics card, right-click on it and go to Disable

3. Disable onboard GPU in BIOS

Maybe your PCI-Express GPU is not even active, to determine that and tun it on, you will have to do some work in the BIOS.

Here’s what you should do to list your PCI-Express graphics card as a primary graphics device:

  1.  Restart your PC
  2. Open the BIOS menu
    • Pressing the F2 or the Del key during computer startup usually opens the BIOS menu
  3. Select the Advanced tab using the left/right arrow keys.
  4. Select the Video Configuration option using the Up/Down arrow keys.
  5. Go to First Display Device or Primary Display Adapter
    • Depends on the motherboard model
  6. Select the PCI-Express Graphics option and press Enter
  7. Press F10 to save the new settings

These pretty much summarize the solutions that you should try if your PC doesn’t detect your second GPU.

If you want to read more interesting articles like this one, don’t hesitate to leave us your feedback in the comments section below.


Editor’s Note: This post was originally published in October 2018 and has been since revamped and updated in September 2020 for freshness, accuracy, and comprehensiveness.

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