I'd run a full antimalware scan using your antivirus suite of choice. Then I'd run a couple of on-demand scanners just to verify the computer is clean. (No antimalware is 100% effective 100% of the time. If there was such a thing we'd all be using it.) Some of the recommended products (all have free versions) are: Malwarebytes
| Hitman Pro
Just to make sure you used the correct Adobe Flash uninstaller, did you get it from this site and did you use the 64-bit version (based on your system specs)? Flash Player Help | Uninstall Flash Player | Windows
Try running the uninstaller at least two times, also following the instructions in paragraph 3.3.a., and reboot in between each run. Due to all of the Flash downloads you've done recently one pass with the uninstaller may not be removing all of the leftover bits and pieces. Then try reinstalling from here (I'd save the installer to desktop and temporarily turn off any antimalware software prior to installing): Adobe - Install Adobe Flash Player
Don't forget to uncheck any optional "stuff" you don't want and to enable antimalware products once install has completed.