In my case with a ThinkPad T500 laptop installed with Windows 10 Pro (64-bit), I have been using the Windows 7 (64-bit) switchable display driver. A Windows 10 Pro update would initially mark the ATI...

I came to a routine now that every time the Windows 10 Update process screws up my dual-screen display with my ThinkPad T500 sitting on its mini ducking station, I will have to do the following:
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I uninstalled the ATI driver this morning and rebooted my T500 laptop a few times to let the Windows update process picking up and install the display driver. This time it worked! It installed an ATI...

Uninstalled the ATI driver this morning, rebooted my T500 laptop a few times to let the Windows 10 process to pick updates. And wala, a driver is installed properly and now I have my dual displays...

Lenovo doesn't have any Windows 10 drivers for T500 line to this moment; neither do ATI and AMD. My anger really is at Windows 10 - an update breaks something that worked before, and that is a no no...

The latest Windows 10 Pro feature updates disabled my ThinkPad T500's dual display ATI card. The dual display or extended display using Intel and ATI cards worked well before this update. After this...