When using HDMI, forced to lock screen

Hey guys. Recently updated to Windows 10, and I watch a lot of tv through my laptop by HDMI to my HDTV. Before with Windows 7, I NEVER had an issue like this.

After somewhere around 15-20 minutes of the HDMI being plugged in and watching via my TV, the computer locks itself. It goes to a black screen and "disconnects" from the HDMI input. BUT the programs keep running, but I can't see or hear them since it doesn't go back to laptop input. To bring it back I have to click the mousepad and it brings me right to asking for my password. How do I stop the laptop from ever locking while I'm watching or streaming through HDMI? It doesn't do it when it's playing straight off the laptop...

Have you checked the screen saver options under control panel , check it's not been toggled on when you switch to HDMI , there's a tickbox there too that tells the laptop to go to the login screen when the display is resumed which might explain the login coming up.

Both are off, when in LCD and HDMI mode.

Bump?

You've checked the Power Options in the Control Panel?
Take a look at: Display - Change Turn off after Time in Windows 10 - Windows 10 Forums

Are your Graphics Drivers up to date?

Juice, I followed the link and already had all of those settings applied on my computer. Also, graphics driver:

AMD A6-3420M APU with Radeon(tm) HD Graphics 1.50Hz

When I go to Windows Update, it says there is nothing left to update. Can I manually find if this driver does need to be updated but Windows just doesn't recognize that?