WDDM1.1 is rather old hat now? it's 1.2 out there.
What's the actual model number for your machine?
That's a trifle weird!
However, if I'm reading things right, that's immediately after installing drivers offered by Windows Update?
If that's so, then uninstall the drivers, and hide the update in WU.
Take the latest offered update for the drivers from Lenovo instead - it is likely to me more recent than the one from WU anyhow.
What is your exact model number?
The laptop I'll have a look and see if I can find a better driver update
The latest available drivers from Lenovo appear to be these - AMD Video Driver for Windows 7 (32-bit, 64-bit) - Lenovo G400, G500
Install these, and see if the WU update is still offered. With luck, they won't be![]()