Ok I've eventually found a solution after trying out almost everything. Doing this on Win7 64bit.
Go to: Control Panel -> Internet Options/Properties -> Programs -> Set Programs -> Set Programs Access and Computer Defaults ; Select Microsoft Windows and click 'ok'.
Now check the All CPU Meter gadget, should be working by now.
I am having the same problem as described here... I have actually been on with MS support and just escalated it to level 2.. these guys have tried everything... has anhone seen how to fix this yet? This problem happened right after SP1 was applied to my win 64 system.....Everything I see in this thread has been done but no resolution
Welcome to Seven Forums valentrick. Suggest you create a new user account and see if you have the same problem there. If you do not, you can transfer your user files to the new account and use that one instead. A Guy
My Computer
At a glance
Windows 10 Home x64INTEL Core i5-750 Quad-Core 3.37GHzHyperX Fury Black Series 8GB (2 x 4GB) 1866MhzEVGA GeForce GTX 750 Superclocked 1GB 128-Bit...
Dunno if this helps anybody with this problem, but when I had this exact problem, I did a repair install of Windows 7. The last thing the install did was inform me that the .Net Framework 4 needed repairing. Once the repair completed and the computer rebooted, all my gadgets worked fine. Don't know if it was the re-install or the repair that fixed it.