I'm posting this suggestion for the 3rd time tonight, but I believe it may indeed help you.
Try a few things for the gadget problem(s). Try turning the Windows Gadget Platform off, reboot, then turn it back on: Windows Features - Turn On or Off
If no help, try the System File Checker SFC /SCANNOW Command - System File Checker
Note you will have to repatch your system after if using 3rd party theme.