Black display

[Dm771]

The screen suddenly went black. no restarting does not help.

I can hear the cooler. and I see the disk loading diode blinking.

[Dm771]

 

[Dm771]

This is the first time I have encountered such a relationship from a company. At this difficult time, leave your customers without help.

[Echo_Lake]

@Dm771

Thank you for posting on the HP Support Community.

Don't worry as I'll be glad to help, however, to provide an accurate resolution, I need a few more details:

• Did this happen after a recent window or software update?
• Have you made any hardware/software changes?
• Have you tried any troubleshooting steps?

While you respond to that, let's try these steps: 

Hard Reset: Follow steps from the link: https://hp.care/2GnkMa8. (do not skip any troubleshooting steps even if you feel steps are repeating)

BIOS default: 

1. Turn off the computer and wait five seconds.
2. Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.
3. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.
4. Press F10 to Save and Exit.
5. Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?
6. Follow the prompts to restart your computer. 

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[Dm771 · Accepted solution]

I did not wait for help here.
Turned to a third-party workshop.
CPU replacement, motherboard repair.
Replacing the screen cable.
I use my laptop Envy 17  again.
But I will never advise anyone to buy it or contact support.

[Echo_Lake]

@Dm771

Thank you for posting back.

I am glad to know that you managed to resolve the issue. Please reach out again for any further assistance.

Have a nice day ahead.