Monitor not recognized on HDMI port

[HunterMSH]

I rebooted my computer last night and after restart, the laptop no longer detects my HDMI monitor. The monitor knows it is plugged-n, but the laptop does not see that there is a monitor installed. I have rebooted and turned off the computer several times and tried several online suggestions, most of which were audio related, all without effect.

[HunterMSH]

Further to my first post. I have two different HDMI monitors and have tried both, so it is not the monitor. Also changed the cable.

[Riddle_Decipher]

@HunterMSH If you are sure the HDMI cables work with other devices and yet they aren't working on this device, I suggest we start with an extensive hardware test:

Let's install the latest version of the HP Hardware diagnostics (UEFI) on your device using this link: Click here for details

• Hold the power button for at least five seconds to turn off the computer.
• Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu appears, press the F2 key.
• On the HP PC Hardware Diagnostics (UEFI) main menu, click System Tests.
• Click Extensive Test.
• Click Run once, or Loop until error.
• While the test is running, the time remaining and test result for each component display on the screen.

If a component fails a test, write down the failure ID (24-digit code) for when you respond back to us.

P.S: Welcome to HP Community 😉

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.

[HunterMSH · Accepted solution]

Before I got your response, I finally found the answer as follows:

• Open cmd as administrator
• run "sfc /scannow"
• When scan is complete, reboot.

Monitor came to life as normal during reboot.

And I almost missed seeing this idea in the one place it was included.

But thanks for providing a possible solution.

Mike

[Riddle_Decipher]

@HunterMSH That's awesome, I'm glad it worked,

Remember, if you ever need help related to your HP device,

We'll be right here and happy to help, take care and have an awesome day, ahead.

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.