Hi I have a strange problem when I right click on Computer and go to properties the system screen doesn't come up. If I go to it through control panel when I try and click on any link to open "device manager" or "system protection" it says "Windows cannot access the specified device, path or file. You may not have the correct permissions to access" or something, it doesn't bring up the Administrator continue dialog box like it used to. Its a clean install, I think it started after I Installed all the updates post sp2. I have run sfc /scannow and it was fine. I can still get to the various screens by typing devmgmt.msc etc, but nothing on the system screen works, not even the windows experience index. Its just bugging me why it won't work anymore. I am using an administrator account. Also tried disabling AVG anti virus.