CMOS error?

[GaspKujo]

Hello, I'm using a HP Laptop - 14-dk1022wm.

Recently it has taken long times to start up, when I turned it on, the power led would come on and the fans would run, but no screen display. Once the screen finally displayed something, it would give me an error about the CMOS battery and reboot the system. Now it won't display anything after any period of time. The power LED is on and the fans are running, and when I look closely at the screen, it appears to be flickering from off, to on but only displaying a black screen, flickering at a meduim pace. Please help me find a fix for this, it would be very appreciated.

[ub6424]

Hello @GaspKujo 

I want to help you.

Please tell me the full product name and product number (p/n) of your notebook.

You will find this information on the back of your notebook printed in small alphanumeric letters.

( Please note: It's not allowed to post serial numbers (s/n) in public ! )

? Can you confirm that the product number (p/n) starts with: 1A480UA

best regards

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[GaspKujo]

HP - 14-dk1022wm is the full name.

And the PN does indeed start with that.

[ub6424]

Hello @GaspKujo 

Please tell me the product number (p/n) so we can go one step further.

best regards

---

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[GaspKujo]

The full PN is 1A480UA#ABA

[ub6424]

Hello @GaspKujo 

(1) Plugin Power Adapter !

(2) Update BIOS

HP Notebook System BIOS Update (AMD Processors)

F.65 Rev.A

26.3 MB

Mar 30, 2022

Download

Why ?

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) Install Hardware Diagnostics UEFI

HP PC Hardware Diagnostics UEFI

8.2.0.0 Rev.A

56.1 MB

Jun 30, 2021

Download

(4) Shutdown ( no Sleep or Hibernate ! ) your notebook.

(5) Start notebook and enter BIOS to load setup defaults, save and exit

(6) Start your notebook again ... login to windows and wait until your desktop is fully loaded

(7) Shutdown your notebook again

(8) Start your notebook again (still CMOS error) ?

best regards

---

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[GaspKujo]

I think you misunderstood the problem, the problem is that currently when I boot it up it's a screen that flickers from off to on but fully black at a medium pace with the power LED on and the fans running, it used to give me a CMOS ERROR after awhile, but this time it hasn't. The screen hasn't flickered before like it is now either, this prefents me from logging in, and installing bios. It appears to be fully charged as well.

[ub6424]

Hello @GaspKujo 

Follow these guides:

(1) https://www.youtube.com/watch?v=sj6kYmT7GLs

(2) https://www.youtube.com/watch?v=qpiGUojtr3E

(3) Check your hardware !

Using the HP PC Hardware Diagnostics (UEFI) to diagnose hardware errors ...

https://support.hp.com/id-en/document/c04499777

Watch how it works:

https://www.youtube.com/watch?v=14GKIpGPNRM&ab_channel=HPSupport

Please report your results

best regards

---

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make it easier for other people to find this type of solution by marking the reply ▶️ [ Accept as Solution ] ◀️

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             ⌨️

[GaspKujo]

None of these options have worked for me.

[ub6424]

Hello @GaspKujo 

In your case: Service is required !
- The computer should be disassembled and checked.
- Thermal paste for CPU GPU and bridges should be renewed

- Screen and connection

- The function of the fan(s) must be checked

- Short circuit test

- General cleaning ...

If you can't do that, you should have it serviced by a professional notebook (chip level) repair store.

best regards

---

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make it easier for other people to find this type of solution by marking the reply ▶️ [ Accept as Solution ] ◀️

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             ⌨️