My monitor goes black after 3 seconds.

[efostino]

My monitor has recently been going black after about 3 seconds.  I have it as a second monitor connected to my laptop. I've tried changing from HDMI TO VGA. I've tried connecting the monitor to a different laptop; I get the same result. The monitor doesn't turn off, just goes black. The power light stays blue it doesn't go orange.  If I unplug and plug the HDMI, I can see the screen for about 3 seconds and then it goes black. I'm unable to keep the lit so I can a factory reset.  

What should I do?

[Rainbow23]

Hi @efostino,

Welcome to HP Support Community. 
Thank you for posting your query, I will be glad to help you.

I see that your HP 2509m 25-inch Diagonal Full HD LCD Monitor goes black after three seconds.

Please follow the steps from this document. (Click on the word document to open the web page).

I hope this helps.
Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!