I installed the updated driver, but rolled it back to the original one after I got rippling when I move opened folders around and even scrolling in my browser . Then after uninstalling Avast I thought I'd try installing that updated driver again, but got that rippling screen issue . So I clicked to rollback driver, and got 'no driver files have been backed up for this device'.
I went and downloaded that older driver, installed it, but still have the same rippling effect. When I click on that driver in device Manager I get 'windows cannot start this hardware device because its configuration info (in the registry) is incomplete or damaged (code 19).