HP Spectre x360 15-ap012dx Not Recognizing HP Active Stylus

[BriM1]

Recently I've been having trouble using my HP Active Stylus on my HP Spectre x360 15-ap012dx 2-in-1 laptop. I originally had a pen with the HP Product Number 797838-001 that stopped registering on the laptop after a few weeks; I have since deduced that this is due to a hardware issue on the pen, as the hardware on the inside of the tip of the pen was broken due to overuse. I replaced this with a pen with the HP Product Number 797838-002. I tested this replacement and it seemed to work a few days ago, but now the screen won't register the pen at all. The touchscreen still registers my touch, so I don't believe that this is an issue with the touchscreen itself. I have tried installing drivers for the BIOS, the HP Button, and the UHD and FHD drivers for the firmware. I've also tried uninstalling and reinstalling the Human Interface Devices pen driver and touchscreen driver, and I have even reset my PC while retaining my files. I tested the current on the AAAA battery and this indicates that the current is about -1.02 V, which I believe should be sufficient to power the pen. I would like to see if this issue can be resolved without me having to buy another pen. Is there any other fixes that I can apply to help my laptop recognize the pen?

[Kumar0307]

@BriM1, Welcome to the HP Support Community!

Thank you for the detailed information. To assist you better, what is the exact model number of the Pen you are using?

Refer to this document to know how to find the Product Name or Product Number.

The product number 797838-002 refers to HP Spectre 15-ch000 x360 Convertible PC. You may refer to this document to check the compatibility of the HP Pen with your PC.

For now, let us try these steps:

Install updates using HP Support Assistant

1. In the search box, type and open HP Support Assistant. 
2. Check for updates. 
3. If the updates are available, click on install and restart the computer.  

Note: If you do not have HP Support Assistant installed, Click here to download the same.

Also, check for any pending Windows update. Reboot the PC once done.

Configure the pen input 

1) In Windows, search for and open Calibrate the screen for pen and touch input.
2) On the Display tab, click Setup.

3) Click Pen input
4) Follow the on-screen directions and check if this helps you fix the issue.

Keep me posted for further assistance.

If you feel my post solved your issue, please click “Accept as Solution”, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!