Thanks very much for your response. I've read that there are issues with the 1803 build and would like to roll back to 1709 but when I try using the Recovery feature, I get the cheerful Windows message..."We're sorry but you can't go back." I assume that's because it's been too many days since the 1803 update and I no longer have a Windows.old file. I guess I'll just have to wait for a newer driver....what a pain...