HP Pavilion Gaming Laptop 16 will turn on but only with black screen

[Ethan43]

Been attempting to work this problem out on my own for weeks now.  The laptop just stopped displaying on the screen one day.  It will display through an external monitor, play sounds, and when attempting to run the HP diagnostic tool, the LCD screen will turn back on through the laptop.  When turning on the laptop, the screen is backlit, but nothing displays.  It will only display when hooked up to an external monitor and duplicate the screen.  I have run through every diagnostic test possible with no error codes, I have opened up the machine and disconnected the battery.  The only thing of note that I can mention is that when doing that reset, the screen will display that there is a CMOS checksum that is invalid or something.  Except, to my knowledge, there is not a CMOS battery that is replaceable or anything of the sort inside the machine.  I have attempted to recover the BIOS to no avail either.  Drivers are all as updated as they could be.  The machine was originally in Windows 10, so I updated to see if it would fix, but nothing happened.  I have seen other people had to send their laptops in to HP for them to fix, but I would love to avoid doing so if possible.  Anybody know of a fix?

[ub6424]

Hello @Ethan43 

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/screenshot/paste following key/value pairs:

OS Name

Version

System Model

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

Processor

BIOS Version/Date

(2) Start Windows <Device Manager>

- Expand <Display adapters>

- Expand <Monitors>

--->>> Send screenshot

(3) Please report your results

[Ethan43]

OS Name - Microsoft Windows 11 Home

Version - 10.0.22621 Build 22621

System Model - HP Pavilion Gaming Laptop 16-a0xxx

System SKU - 2C387UA#ABA

Processor - Intel(R) Core(TM) i5-10300H CPU @ 2.50GHz, 2496 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date - AMI F.23, 3/29/2022

[ub6424]

Hello @Ethan43 

(1) Download and install BIOS Update

HP Notebook System BIOS Update

F.24 Rev.A

12.0 MB

Aug 12, 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.

"

(2) Reboot

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

(4) Please report your results

[Ethan43]

Just did this, the screen still remains blank unfortunately

[ub6424]

Hello @Ethan43 

(1) Backup <all> personal data (documents/pictures/videos etc...) to external <USB hard drive>

(2) Please reinstall your Windows 10 operating system !

You need (another Windows computer) to prepare bootable <USB flash drive>

 An unused or empty USB flash drive with at least 32 GB storage capacity is required.

HP Consumer PCs - Using the HP Cloud Recovery Tool in Windows 11 and 10

Take time and follow

https://support.hp.com/us-en/document/ish_4511095-4511141-16

( All Software and drivers from HP are included )

Information: Your product number is supported: 2C387UA#ABA

(3) Please report your results