My screen keeps flickering when on battery power or on a certain brightness

[TheLichenWolf]

The screen on my HP ENVY - 13-ad014na laptop keeps flickering when it reaches half brightness or lower or when it is on battery power. I have tried to fix this by deleting and reinstalling both screen adapters, which works for a few days but then the problem starts again. Any ideas on how to fix this?

[ub6424]

Hello @TheLichenWolf 

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

Let me check your current system configuration.

(1) Run    msinfo32

- Select <System Summary>:

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

OS Name

Version

System Model

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

BIOS Version/Date

(2) Please report your results

[TheLichenWolf]

OS name - Microsoft Windows 10 home

Version - 10.0.19044 Build 19044

System model - HP ENVY Laptop 13-ad0xx

System SKU - 2FQ88EA#ABU

BIOS Version/Date - Insyde F.29, 03/12/2019

[ub6424]

Hello @TheLichenWolf 

Please follow instructions ...

(1) Download and install BIOS Update

HP Firmware Pack (Intel Processors)

F.33 Rev.A

9.7 MB

Sep 10, 2021

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.

"

(2) Reboot

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

(4) Download and Install/Update

HP Consumer Desktop / Notebook PC ME Firmware Update

2021.1.0902 Rev.A

33.9 MB

Sep 2, 2021

Download

Intel Management Engine Interface (MEI) Driver

2108.100.0.1053 Rev.S

17.1 MB

Sep 6, 2021

Download

(5) Reboot 

(6) Shutdown computer ( No sleep / No Hibernate )

(7) Disconnect charger

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

(9) Connect charger

(10) Power on and test

(11) Please report your results

[TheLichenWolf]

Hi @Ub6424

Thank you very much! It seems to be working at the moment but I will have to wait for a few days to see if it starts flickering again or not. Will keep you updated, and thanks again.

[ub6424]

---

@TheLichenWolf wrote:

Hi @Ub6424

Thank you very much! It seems to be working at the moment but I will have to wait for a few days to see if it starts flickering again or not. Will keep you updated, and thanks again.

---

Sounds good, keep me updated

Good luck

[TheLichenWolf]

Hi again @Ub6424

So update: it worked for a time, but then it has just started flickering again when I tried to put it on a lower brightness (and also when I unplug my charger). I think it starts flickering when I have my laptop on a high brightness for a while then try to turn it down.

I completely understand if this is a lost cause, and again I thank you so much for all your help.

[ub6424]

Hello @TheLichenWolf 

Recommendation and solution

In your case: Service is required !
- The computer should be disassembled and checked.
- [Always recommended] Thermal paste for CPU GPU and bridges should be renewed
- [Always recommended] The function of the fan(s) must be checked

- The internal display cable from motherboard to screen has to be checked or replaced

- The screen has to checked or replaced

- Short circuit test

- General cleaning ...

HP warranty valid -> Contact HP Support for service repair

HP warranty expired:

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

Good luck