Won't boot without charger after replacing battery and charge port, gives CMOS checksum error

[Jok9]

Hey everyone,

I recently changed battery and charge port on my device. The charge port works, charging the battery works, however, I can only boot the system with the charging cable plugged in, otherwise the device will simply not start up. When then booting up, a CMOS checksum error shows and the systems internal time has to be reset. The device appears to shut down completely after a while, even when in energy saving "standby" mode with a fully charged battery. This did not start happening after I replaced the charge port, only after I replaced the battery shortly thereafter. Because this, I am suspicious as to the CMOS checksum error, because it only started showing after the battery was replaced. 

The device still works and the new battery works fine as well, however I always need to have an electricity plug nearby in order to boot it. 

Any thoughts or help are very appreciated. I would hate to spend a lot of money on some repairshop after doing all the other replacements myself. 

Cheers

[BeemerBiker]

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@Jok9 wrote:

Hey everyone,

I recently changed battery and charge port on my device. The charge port works,

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The battery part number should be L11119-855

The charge port should be L20475-001

Can you provide a link to items you bought?  It seems like the charge port is not working.  Possibly removing the jack the "break" is made before the battery is"made"  This is just a guess but it seems that momentarily neither the battery nor the charger is powering the laptop causing powerloss and the checksum to go bad.

There could also be a battery problem.  

Please run the battery report and post  the summery
you run the battery report by bringing up the administrator command windows "cmd" and running powercfg/batteryreport as shown below

After entering that explorer line you should see something like the following. You will have to click on it as it is long
http://stateson.net/docs/SP4_battery-report.html
You can use the WindowsKey + shift + S to copy and paste a small image if you want.

The battery should have a serial number and should show some activity.  

You may want to look at the charge port cable and make sure it is secure in the motherboard connector.  It should also exactly match the cable you removed.

[Jok9]

Hey BeemerBiker,

thanks for your reply. Here's a link to my battery report: https://www.dropbox.com/scl/fi/jrtfuwuft1a70b04ews8h/battery-report.html?rlkey=umv6pobzkzvt0j5kbmjby...

As to the replacement parts I used: They were not exactly the same parts as the original ones, although I was told that they would be compatible. The charging port is for a very similar laptop model, since the one built for my specific laptop was no longer available. It does charge without a problem, too.

This is the charge port I bought: https://www.dcjack.de/product_info.php?products_id=3809

And this the battery: https://www.akkubuy.de/akku-hp/hp-pavilion-15-da0103ng-akku.htm

The sites are in german, hope thats okay, maybe you can auto-translate.

I would be very glad for any further help.

Cheers

[BeemerBiker]

The battery report indidcates a genuine HP and the correct one.  I compared images of your charging port and it matched exactly to the what was being offerered at several sites.

Possibly the problem is a fault in the BIOS settings.  The next time the CMOS error shows up, go into the BIOS setup and make a change.  Any change as long as the BIOS does not print "nothing changed".  For example, try changing the date,  press F10 to save the settings., when the system reboots, tap F10 and go into the BIOS and change the date back to the correct date.  I am guessing that the CMOS setup may not have been saved and consquently the error alway shows up.

Have you run diagnostics?  
Tap the ESC key after powering on and run at least one pass through memory and disk diagnostics.
If you do not have diagnostics get UEFI diagnostic here.
Do not attempt any repair or upgrade if disk or memory is faulty, especially BIOS upgrade

Why did you change the power in port in the first place? 

The battery report indicates you have BIOS F.01 dated 3/16/2018  which is unusually old.  Is that the BIOS versoin shown when you go into the CMOS setup?

If this is your laptop, the bios history only goes back to 2020 and "F.30" quite a long way from F.01

If you click on the following and expand the "Revision History" you can see how many updates to the BIOS there are

https://support.hp.com/us-en/drivers/swdetails/hp-15-da0000-laptop-pc/model/23086171/swItemId/ob-318...

When you run the HP Support Assistant, does it recommend you update the BIOS?

Thea latest version of the assistant is 9.28.30 but the German one may have a different version number.

I do not recommend updateing the BIOS if there are hardware problems.

If you reboot the laptop wiht the A/C plugged in do you still get a checksum error?  If so, I advise against bios update.