window7 can't open the sidebar

[chennianjia]

I can't open sidebar wheather I am disable or enable the UAC
what's wrong with my system?
Does any body have some idea?That how can i do so?
Any kind of information on it would be appreciated.

Thanks in advance!

[Maq.H]

I don’t know what might be the issue but lets try to enable it from scratch. First click on Control Panel and go to Programs and Features. Here you will see Turn Windows features on or off on the left side. Click on the same. This will open a new dialog box, scroll to the bottom and uncheck the box infront of Windows Gadget Platform. That’s it. Click OK and reboot the system.

For more info, you can checkout these articles:
Enable and disable windows sidebar program in Windows 7
Windows 7 X64 Sidebar gadget not working