Elantech Touchpad NOT DETECTED by Windows or Linux after BIOS Update on HP 14-ck Laptop

[JRB-Tech]

I have been repairing computers for more than 25 years, I am an Electronics and Computer Systems Engineer, so I expect a real answer and not one of many incoherent answers that I have read in HP and Microsoft forums. I have an HP 14-ck0001la laptop that I use for my son's schoolwork and sometimes, to test Software, Live-USB's and Linux distributions, in which everything worked fine. I recently updated its drivers and…. the BIOS. After the BIOS update to version F.69 Rev A. the Elantech touchpad is no more detect by Windows, the Hardware is no longer present it sayed. Neither Linux nor any other software tool, detect touchpad in the system. It is obvious to me that the firmware is faulty and a bug in the firmware disabled the touchpad. Using the BIOS recovery method (Win+B at startup), I tried to install a previous version of it, but the flash program reports the missing of the signature file (.sig). This file is present on the bootable USB in the folder ‘Hewlett-Packard\Bios\Current\08656.sig’ and ‘HP\Bios\Current\08656.sig’, but only in the latest BIOS image (F.69), it does not exist in NONE of the previous version images available for download. How am I supposed to install a previous version of BIOS, if a file is missing that the flash program explicitly asks for, how can I generate this file or where can I download a full BIOS image. Thank you HP, you are good at selling, but not at giving adequate support to your products!

[ub6424]

Hello @JRB-Tech 

Sorry to hear that you are having problems ... I would like to help you.

Before we get into the details, I would first like to check your current system configuration.

(1) Run    msinfo32

- Select <System Summary>:

- copy/paste to following key/values pairs:

OS Name

Version

System Model

System SKU ( equals HP product number (p/n) )

BIOS Version/Date

(2) Please report your results

[JRB-Tech]

OS Name: Microsoft Windows 10 Home

Version: 10.0.19044 Compilation 19044 

System Model: SLIC-MPC

System SKU: (No compatible it says) .

                          May be this help:  Model HP 14-ck0001la ; ProdID: 3PX14LA#ABM 

                                                            Mainboard Product: 849E; Mainboard Version: KBC 76.35

BIOS Version/Date: Insyde  F.69, 31/03/2022 

[ub6424]

Hello @JRB-Tech 

Now we go a little deeper into topic ...

(1) Install/Update

HP Consumer Desktop / Notebook PC ME Firmware Update

01 Rev.A

7.7 MB

Jul 24, 2018

Download

Intel Chipset Installation Utility and Driver

10.1.18460.8229 Rev.A

0.5 MB

Dec 16, 2020

Download

Intel Dynamic Tuning Driver

8.7.10401.16510 Rev.A

6.5 MB

Dec 16, 2020

Download

Intel Management Engine Interface (MEI) Driver

2035.15.0.1807 Rev.A

16.8 MB

Dec 14, 2020

Download

Intel Serial IO Driver

30.100.1726.2 Rev.A

2.4 MB

Mar 23, 2018

Download

Intel Software Guard Extensions Device (SGX) Driver

1.9.105.42143 Rev.A

6.4 MB

Mar 23, 2018

Download

Intel Trusted Execution Engine Interface Driver

1924.4.0.1062 Rev.S

13.2 MB

Jun 11, 2020

Download

(2) Reboot

(3) Start windows <device manager>

- Uninstall touchpad driver !

(4) Install

ELAN Touchpad Driver

21.2.28.7 Rev.B

39.3 MB

Dec 7, 2020

Download

(5) Shutdown

(6) Disconnect Charger ( and battery if possible )

(7) Press and hold <power> button for 30 seconds

(8) Connect Charger ( and battery )

(9) Start windows and test <touchpad>

(10) Please report your results