Windows 10: Windows 10, displaying on an external monitor from laptop

I have a TV connected to my laptop via an HDMI cable, wanting to show a PowerPoint presentation. At one point it was working, but now only the laptop's "desktop" shows up on the TV screen, nothing else that I am doing on the computer (PowerPoint or otherwise). Any idea why? what changed?

:)

 

No display on laptop's external monitor-Monitor recognized but blank


After the recent Windows 10 update, my wife's laptop no longer displays on the external monitor. All was well before the update.

I am comfortable that Windows sees the monitor because clicking on Display Settings shows two displays. If I unplug the HDMI cable, only one display is shown.

I have confirmed that the monitor works by trying it with another laptop. I have also changed the HDMI cable between the laptop and the external monitor.

Device manager reports that I have the latest display driver installed.

I would appreciate any and all suggestions.

 

Laptop External Monitor Problem


Thank you once again, I will explain:

• Today 10th November 2016 - After monitor eventually successfully connects to my HP laptop, in my absence when the laptop/monitor powers off, I get NO re-connection problems during the day
• Tomorrow 11th November 2016 - After laptop and monitor has been restarted following, shut-down, power offs(laptop + monitor) I will be stuck once again with exactly the same problem

In my display settings each morning, my HP laptop shows it is connected to my external monitor, however there is no display on the external monitor for a vast amount of time, just randomly suddenly appears.?

 

Windows 10 and displaying content on two external monitors.

Windows 10 display options is not detecting both my external monitors. It detects the laptop and one of the external monitors. I need to display different screens of information on each external monitor. What do I need to do to get both external monitors
recognized?