Black Screen after Windows 11 update

[Wonka-0458]

HP Spectre x360 Convertible Model 15t-eb000

Product ID: 7MQ42AV

I chose to upgrade to Windows 11 and selected the option to "Update and shut down". I later kept my laptop off and then restarted it the next morning. It still had the option to "update and shut" down when I started it up again. The next time I did this I had tried to turn it on but the screen remains black. The engine and fans are running but the display screen is black. I have a backlight key for my keyboard and it does not come on when I press it. It does overheat a little. This happened during the last Windows update but I was able to turn it on. I tried connecting it via HDMI to my TV which shares the same internet service as my laptop but no signal could be found. I tried connecting my laptop to my phone via Link to Windows app but it could not detect my laptop. I also tried the BOIS or BIOS reset but could not figure the right key configuration as the information provided by HP is 8 years old and I purchased mine about two years ago. I also unscrewed the panel to look for damages but did not see anything. I could not download the maintenance manual through HP because when I click on it nothing happens and yes I have a current subscription to Adobe. I keep trying to reboot it but it just doesn't turn on and there's no noise or beeps besides the fans. 

[sandytechy20]

@Wonka-0458

Welcome to the HP support community.

I understand that you are getting no boot issues, I am glad to assist you.

Please attempt the below steps: 

Perform a hard reset 

Attempt a BIOS recovery  

Run the System Diagnostics tests 
   

For more steps, click here 

Keep me posted.

If this helps, please mark the public post as an accepted solution so that it benefits several others.

Cheers.