The palm rejection of my notebook is not working properly.

[LigeNyodu]

The palm rejection of my notebook is not working well. It works fine when I don't put my thumb on the screen. What is the problem, I don't seem to understand it. The pen could not possibly be defective as it writes when I don't put my thumb on the screen. Could it be the software problem, because the airplane mode in my notebook also keeps toggling on and off, when I first turn on my laptop. 

[Echo_Lake]

@LigeNyodu
Thank you for posting on the HP Support Community.

• Did this happen after a recent window or software update?
• Have you made any hardware/software changes?
• Have you tried any troubleshooting steps?

While you respond to that, let's try these steps: 

Let's perform Hard Reset: Follow steps from the link: https://hp.care/2GnkMa8.

Next, BIOS default: 

1. Turn off the computer and wait five seconds.
2. Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.
3. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.
4. Press F10 to Save and Exit.
5. Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?
6. Follow the prompts to restart your computer.

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.