Win 10 Upgrade Created Two Displays on One Screen Laptop

Hi all, I upgraded my old (2010) HP Touchsmart TM2 to Windows 10 because I upgraded my other 3 comps, so what the heck, right? I have switchable dual graphics cards, (Intel Core 2 Duo SU9600 , ATI Mobility Radeon HD 4550) and on final installation reboot, it said it was upgrading my graphics driver. When it booted after that, my screen was black. So I blindly logged in, and found that pressing the Windows+P, then down arrow/enter keys, which selects your displays, brought the screen up. It was on Second Display Only when it worked.


However, the brightness setting does not work for the 2 screen. It also doesn't work when I choose the 1 screen. When I press Detect, it comes up with the 1 and 2 screen, and two other boxes that say not detected. The brightness setting only works for a second when I choose Extend This Display, then the screen goes black, but I can't remember which screen has that option. I can't even figure out which display number goes to which card. It's almost like Win10 thinks the two graphics card are two separate monitors and neither are the actual laptop screen. I don't have other monitors plugged in. Can anyone help me work this out?

Thank you!

So I disabled my discrete ATI card. This brought the screen back to " PC Screen Only" which allowed me to set the extremely sensitive btightness slider up a little. But my orel Painter was lagging so much, I turned the discrete graphics back on. I haven't tried disabling the Intel onboard yet. Doesn't anyone have any thoughts?

Try disabling the onboard Intel graphics.