Broken laptop screen won't connect to external monitor

[BlueIris1]

Hello, I would be very grateful for your advice re. a frustrating issue I am experiencing.

I have an HP Pavilion laptop. The screen is broken but I have an external HP monitor connected to it by an HDMI cable. I have the laptop on a setting so that when the laptop is closed it continues to function and doesn't go into standby mode. This was so I could have it closed and on my

shelf while using the monitor, before the screen broke.

When the screen broke the laptop was on and I was logged into Windows. I then immediately plugged in the monitor HDMI cable and it transitioned to the screen quite seamlessly. I did not turn off the laptop for days and kept it charged, because I was worried that if if it switched off, it wouldn't automatically detect the display when I turned it back on on.

Well, this is exactly what has happened now. (In the end I turned off my laptop as I thought keeping it on forever was unsustainable.)

I now cannot get it to detect the monitor. The monitor does not detect any input. And I don't know how to make the laptop switch to external monitor. Pressing FN F4 doesn't seem to do anything. I also can't figure out how to log in without seeing the screen.

Thank you for any advice you can offer.

[Echo_Lake]

@BlueIris1

Thank you for posting on the HP Support Community.
 

Don't worry as I'll be glad to help, 

I understand your HP notebook screen is damaged and it's not working on an external monitor, to fix this issue your computer needs to be repaired. 

I'm sending out a private message to assist you with the next course of action. Please check your Private message icon on the upper right corner of your HP Community profile Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link: https://h30434.www3.hp.com/t5/notes/privatenotespage
 

Hope this helps! Keep me posted for further assistance.
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