X360 Pavilion: don't boot, amber LED F6 key is on

[Frank71__]

The computer turns on (power LED is on) but the operating system does not start. The screen remains black. The hard drive LED lights intermittently (as if it were working). The F6 (mute) button lights up the amber LED. What could it be? Thanks in advance.

[Echo_Lake]

@Frank71__

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: 

Firstly, run Hard Reset: Follow steps from the link: https://hp.care/2GnkMa8 (if the computer doesn't start up/power on you can skip the next step)

Next step, 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.

[Frank71__]

If I open the screen for more than 90 degrees the issue is fixed: the screen works fine.

Also during Windows session sometime the screen blank with no reason, then I set the angle of screen to more than 90 degrees and it works again.

[Echo_Lake]

@Frank71__
Thank you for posting back. 

This sounds like hardware related issue with the computer. Hence, I would request you to contact our Support and our Support Engineers should be able to sort this out. HP Support can be reached by clicking on the following link:  www.hp.com/contacthp/

Please feel free to contact us here anytime you need any further assistance. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[Frank71__]

The 2 years warranty is expired. Anyway thank you for the support 

[Riddle_Decipher]

@Frank71__ I understand, however, you can still call them and check your options, if you aren't able to get their number, 

it's most likely because the device is out of warranty, if yes? please send me a private message with the region you are contacting us from, 

here's how private messages work: Click here for details.

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.