cmos check sum error after battery replacement HP 250 G7 on start up

[mr_ok]

Hi,

I am refering to the topic below.

https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/problem-with-starting-laptop-a...

In short words it didnt help in a long term.

Ocasional start-up problems become permanent now, i did battery calibration again recently and it helped literally nothing. i cannot power on a computer without an external power supply.

[ub6424]

Hello @mr_ok

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

Let me check your basic system configuration before we focus on the <cmos/battery> problem ...

(1) Run    msinfo32

- Select <System Summary>:

--->>> Copy/screenshot/paste following key/value pairs:

OS Name

Version

System Model

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

Processor

BIOS Version/Date

(2) Please report your results

[mr_ok]

OS Name MS Win 10 PRO

Version 10.0.19044 Comp 19044

System Model HP 250 G7

System SKU - cannot see. ( equals HP product number (p/n) )

Processor Intel Core i7-8565U 1,8GHz 1992 MHz 4/8

BIOS Version/Date Insyde F.22 28.08.2019

[ub6424]

Hello @mr_ok 

(1) Create Windows system <restore point>

How to Create a System Restore Point on Windows 10 or Windows 11

(2) Download and install BIOS Update

HP Notebook System BIOS Update (Intel Processors)

F.42 Rev.A

50.9 MB

Aug 15, 2022

Download

Why should you install the update ?

https://support.hp.com/us-en/document/ish_4123786-2338478-16

Quote: "

Updating the BIOS is recommended as standard maintenance of the computer. It can also help resolve the following issues:

• An available BIOS update resolves a specific issue or improves computer performance.
• The current BIOS does not support a hardware component or a Windows upgrade.
• HP Support recommends installing a specific BIOS update.

"

(3) Reboot

(4) Let BIOS be installed until it's completely done !

(5) Download and install / update 

Intel Management Engine Interface (MEI) Driver

2040.100.0.1029 Rev.A

17.8 MB

Mar 26, 2021

Download

(6) Restart Windows

(7) Please report your results

[mr_ok]

Thanks i will try to follow that procedure. I could have read somewhere that it could have something in common with a power management.

But I just wonder why, when i check the avaliable updated drivers with a HP dedicated software or on the Hp support web page i have got only an advice about some Realtek network driver.

I also tried to find these files somwhere on the HP page nof by just following the link but as i would google them and then download form some hp page. I couldnt have, what is strange to me.