Installed Creators Update on two PC's. One worked with no issues. The second no longer will display Action Center either with Windows-A keys or clicking on Action Center icon in taskbar. Also notice a strange flickering when using the search icon in the taskbar. Reboots did nothing, then read some posts elsewhere that suggested running System File Scan sfc /scannow in Administrator mode to find and repair any W10 system files but it "did not find any integrity violations". I could go back in time with a System Restore and reinstall, but I'm not optimistic that will help and the problem is a nuisance, not critical. Any suggestions where to go next with this? Would it be worth downloading the Creators Update manually and install it over my current install? Can I (and should I) even do that without making things worse? Thanks.