This is a Windows 10 issue.
I have an HP Probook 4710s with an ATI Radion 4300 video card. When I installed Windows 10 Insider build 10162 everything worked perfectly. Specifically, I could connect to my TV via HDMI using "Windows" "P".
I just upgraded to the latest supported build. I suspect that the video driver has been "updated". Bottom line, I now cannot connect to my TV. "Windows" "P" says "Your PC cannot project to another screen. Try reinstalling the driver or using a different video card."
The hardware obviously works since everything worked under build 101762. I'm not a technical guy, but it's gotta be the software (driver). So I'd simply like to replace the current driver with the one I had with build 10162 but I have no idea what I'm looking for. (If I get there I'll disable future Windows 10 attempts to update this.) Can some one please point me to the *CORRECT* driver for my system? (i.e. the driver I had in build 10162?) Device Manager says it is an ATI Radeon HD 4300 series. The current (problematic) driver is
Driver Provider: Advanced Micro Devices, Inc.
Driver Date: 7/15/2015
Driver Version: 15.200.1060.0
Digital Signer: Microsoft Windows Hardware Compatibility Publisher
I also have this question outstanding via email but I guess they are backlogged and I would like to get my TV back! :-)
Thank you. Regards, Brent.