15-fd0215dx Battery Life And Touch Screen

[jbaird]

Has anyone had any luck extending battery life by disabling touch screen? I really don't want touch screen anyway, so I would like to disable it. My battery life is only about 3 hours, much less than what is advertised. I don't use if for gaming, only for web surfing and email. Battery also drains about 20% in a week, when turned off. I have disabled the usb power supply, so there should be no energy use when  not turned on. I am certain I did not put it in sleep or hibernation. All indicator lights are off when I completly shut down.

There also seems to be a problem with BIOS and Windows updates. Getting errors about TPM and secure boot. I have installed all available updates. I am considering installing Linux, seeing as this could be a Microsoft induced problem.

[Jerry_57]

Hi @jbaird,

Welcome to the HP Support Community.

Thank you for posting your query. I will be glad to help you.

To help your HP 15-fd0215dx breathe longer on battery, you’d like to gently turn off the touchscreen. Kindly refer to the steps below:

1.  Disable Touchscreen (if unwanted):

• Open Device Manager → Human Interface Devices → right‑click HID‑compliant touch screen → Disable device.
• This won’t harm the system and can be reversed anytime.

2.  Check Battery Health:

• Run powercfg /batteryreport in Windows Command Prompt.
• Compare Design Capacity vs. Full Charge Capacity. If the latter is much lower, the battery may need replacement.

3.  Adjust Power Settings:

• Turn off Fast Startup in Windows (Control Panel → Power Options → Choose what the power buttons do).
• Lower screen brightness and disable background apps.

4.  BIOS & Firmware Updates:

• TPM/Secure Boot errors often indicate an outdated BIOS or corrupted firmware.
• Visit Official HP® Support for the 15‑fd0215dx and manually install the latest BIOS update.
  
  

5. Linux Consideration:

• Linux can sometimes improve idle power management, but driver support for newer AMD/Intel chipsets varies.
• Test with a live USB before fully switching.

I hope this will help.

Take care and have a good day.

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

Jerry_57
HP Support

[jbaird]

Thanks for your input.

I do have the latest BIOS and I continue to get errors related to TMP and Secure Boot. Here is part of one error..."Updated Secure Boot certificates are available on this device but have not yet been applied to the firmware. Review the published guidance to complete the update and maintain full protection. This device signature information is included here." I think I might need help from HP in applying in to the firmware.

The other error has this............."The Secure Boot update failed to update SBAT with error Unknown HResult Error code: 0x800700c1". This could be a Microsoft problem, but I am afraid that I might get locked out of my PC if this is not corrected. I understand there is an issue with Secure Boot certificates expiring.

Thanks for the tip on disabling Touch Screen. I have it turned off now. Battery report indicates everything is OK.

Thank you,

jbaird

[jbaird]

Per instructions I found on the internet, I suspended Bitlocker, entered BIOS and disabled TPM and cleared TPM. I rebooted and did not see the TPM/Secure Boot errors. Of course, this was with TPM disabled. I entered BIOS again and reenabled TPM.

After rebooting I had to set up my PIN again. Then I rebooted and checked errors. The new error has this....."Pre-attestation health checks confirm a critical component has failed, and the device is not expected to pass attestation.  Please see C:\windows\Logs\MeasuredBoot\0000000075-0000000000.json for detailed information on what checks were made." This might be related to Bitlocker which is still suspended. I will reenable Bitlocker, clear errors and reboot to see what I get. 

[jbaird]

After reenabling Bitlocker the latest error is gone, and there are no more TPM/Secure Boot errors. This should not be so difficult. I think most users don't even look at event logs, and many might be surprised one day when the are locked out because of TPM, Secure Boot, and Bitlocker. As a side note, a friend of mine got locked out of his ASUS laptop because of some glitch, and seeing as he did not have a Bitlocker recovery key, we had to reinstall Windows from scratch. He, like so many others, was not even aware that Bitlocker was installed on his laptop. After reinstalling Windows 11, Bitlocker is no longer available. I guess it is just for OEM installs. I think most people would be better off without it.

Thanks for the feedback, hopefully all of this can help someone else.

[Jerry_57 · Accepted solution]

Hi @jbaird,

Thank you for your response.

Primary Troubleshooting Steps

• Run Update Troubleshooter: Go to Settings > System > Troubleshoot > Other troubleshooters and run the Windows Update troubleshooter.
   
• Restart/Pause Updates: Restart your computer twice, or pause updates for one week and resume them to clear temporary update issues.
   
• Run System Scans (SFC/DISM): Open Command Prompt as Administrator, run sfc /scannow, then dism /online /cleanup-image /restorehealth to repair corrupted files.
   
• Disable Third-Party Security: Temporarily disable antivirus software, as it can block installation.
  
  Fixing Secure Boot Issues (HP Specific) 

If the error occurs during a BIOS or security update (common in HP support forums), follow these steps: 

1. Verify Secure Boot: Press Win + R, type msinfo32, press Enter, and check "Secure Boot State." If it is off, enable it in BIOS (F10).
    
2. Reset Secure Boot Keys: Enter BIOS (F10), navigate to Security > Secure Boot Configuration, and select Reset Secure Boot Keys to Factory Defaults.
    
3. Reflash/Update BIOS: Visit the Official HP® Support and download the latest BIOS for your model. 
   
   I hope this will help.
   
    

Take care and have a good day.

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

Jerry_57
HP Support
 

[jbaird]

Battery life continues to be a problem. I just started my laptop this morning after it had been off for 3 days. The battery was down to 89%. I am sbolutely sure it was completely turned off. I have disabled USB port charging, so there should be no significant discharge in just 3 days.

I restarted an old Acer laptop yesterday after it had been off for several days and it was at 100% charge.

I have now been using this laptop for just over an hour and I am down to 55% battery, from 89% when first booted today. Not doing any heavy duty work, just troubleshooting battery life and display error issues in event viewer.  It's a shame, I want to like this laptop, but these problems are irritating. Takes the fun out of owning a new laptop.