Showing results for 
Search instead for 
Did you mean: 
New member
1 0 0 0
Message 1 of 2
Flag Post

Black Screen. Can see back light..

HP Recommended
Example: Pavilion 23 all in oneOK
Microsoft Windows 10 (64-bit)

    OK. After I installed Windows 10, my touchscreen didn't respond to touch. So after many attempts to fix this, including letting HP take control of the PC & re-do the Windows 10 fresh start w/their added tweaks, I decided the problem must be hardware.  Even though the diagnostics seemed to think everything was fine, with all it's "the driver for your device is the best one" &  "HID touchscreen working properly", I decided to take it apart & see.

    There was rust on the metal around the screen frame where the sensors attached and I figured this must be the problem. So with my "bull in a china shop" type fix it style, I sprayed WD-40  Specialist electrical contact cleaner spray on the rusty areas, let it dry thoroughly & proceeded to check the flat wire connections for any corrosion, which there was a mild patina of oxidation. Inserting & removing them a few times with the flap half closed cleaned them nicely.  Then the final once over to make sure everything was plugged in & in the right places, no tabs were bent, etc.

    After about an hour of drying time, I plugged in the PC & just as I expected, now I have NO SCREEN AT ALL except back-light.  Have I totally destroyed this screen? Or worse yet, fried something internal due to a short I may have created with the spray. (Power was off, unplugged from back, power button held down for 15 sec before removal of back cover. Also grounded myself.) My next step was going to be plug in an external monitor to see what can or cant be seen.

    Any suggestions would be greatly appreciated.   Thank you.

17,747 17,730 1,301 2,088
Message 2 of 2
Flag Post
HP Recommended

Hi! @farscape99,


Thanks for writing to us.


It certainly sounds like a hardware issue with the display or the display cable.


As the parts on an All-in-one PC are not customer-replaceable parts. There are no service instructions on fixing the issue.


Note: Replacing or removing the parts on the PC might void the warranty.


There is nothing much we can do in this situation, Please contact HP support for service options.


Contact HP support using this link. Click Here


Take Care! 

Have a pleasant day ahead! 🙂


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!

I am an HP Employee

Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation