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HP Omen 17-an120nr Monitor Doesn't Work After Re-Assembly

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HP Omen 17-an120nr
Microsoft Windows 10 (64-bit)



I just spent the day replacing the keyboard on my HP Omen 17-an120nr, which in and of itself is a really fun process full of bloody fingers.


After re-assembling the laptop, the laptop's screen no longer works. I was able to connect an external monitor to it and get it to work, get booted into Windows, etc. 


The laptop's graphics card seems to be working, it's recognized by the OS / GPU-z, and obviously I'm able to get output to an external monitor, but the laptop screen just stays black the whole time.


I didn't do anything to the laptop screen after taking off the top panel, so I'm wondering if maybe I accidentally broke the ribbon cable that plugs into the motherboard? 


I wanted to get a second opinion and possibly some other opinions or troubleshooting options before I go buy a replacement ribbon cable and go through the process of tearing the whole thing apart again to replace it.

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Hi @ wheels387, 


Welcome to the HP Support Community. I'd be happy to assist you but  Unfortunately, it's a hardware issue. Please contact the phone support in your region regarding this issue.


Keep me posted for any other assistance.



Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. 

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping! 


Have a great day!  

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