Black screen flashing capslock

[ET422]

Model 14s-dq1508sa

The screen is black the caps lock flashes 3 times quickly then does a double flash. 

[sandytechy20]

@ET422

Welcome to the HP support community.

I understand that you are getting a black screen on the notebook, I am glad to assist you.

This condition indicates a potential memory failure. Reseat the memory module from inside the computer.

• Turn off the computer, disconnect the power cord, and then remove the battery.
• Turn over the computer, and then remove the cover to access the memory.
• Some computers might not have a cover that provides access to the memory. Have the computer serviced if you cannot access the memory.
• 
• Locate the memory module.
• To find the location of the memory module, open the Maintenance and Service Guide for installed memory information for your computer.
• Ground yourself to discharge any static electricity by placing one hand on the case of the computer, and then touch the other hand to a metal surface or grounded object, such as the metal part of a lamp.
• Reseat the memory modules in the computer, aligning the notches on the modules with the tabs in the memory slot. Press down on the memory module to secure the it in place.
• 
• Replace the cover, battery, and then plug in power cord.
• Turn on the computer.
• Confirm that the computer can start up and run in the Windows operating system.

Keep me posted.

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

Cheers.