HDMI auxiliary display has blackouts for 2-3 seconds periodically

[Railray]

I have an HP display now but other HDMI display had same problem

[Echo_Lake · Accepted solution]

@Railray

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 updated Graphics and Chipset drivers?
• What is the exact product number of your device? Use this link to find it: http://support.hp.com/us-en/document/c03754824

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

Hard Reset: Follow steps from the link: https://hp.care/2GnkMa8. (Refer to the removable and sealed battery)
BIOS default:(do not skip any troubleshooting steps even if you feel steps are repeating)

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.

[Railray]

This was not keyed by a windows or other s/w update as far as I know.

No update to Graphics and Chipset drivers.

Product # 5SK15UA#ABA

Railray

[Railray]

Resetting the BIOs seems to have worked.

Your instructions were incomplete as the reboot was in some kind of limited mode.  After another restart I have a success.

[Echo_Lake]

@Railray

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.

[Railray]

Sadly, the problem has continued.

[Echo_Lake]

@Railray

Thank you for posting back. 

I would request you to contact our Support and our Support Engineers should be able to Remote into your computer and sort this out. HP Support can be reached by clicking on the following link: www.hp.com/contacthp/