Interesting post... I have same problem except the opposite... in order to fix the (non) behavior, I put it to "sleep" for a minute and then wake it up and search works until re-boot, when I have to...

I have the same issue... I found that if, I reboot, problem returns... BUT, if I put PC to "Sleep" for a while, when I wake it up, the Windows search works properly (respond to clicking on any kind...