If you can't solve problems using these ways, the easiest way you can see.
1. Type regedit in start menu searchbox and press Enter. It'll open Registry Editor
2. The Registry Editor has two panes. The left pane is to navigate on certain registry keys and the right pane is to see values of keys that you select.
3.If you want to delete, then in the left pane select you want and in the left pane right click to delete it.
1.First of all click the Start button to view the Start Menu. Then choose the Control Panel option.
2.After click Control Panel, enter into System and Security, then click into Windows Update.
3. Now you are at the Windows Update section of our Window 7 Control panel. You can manually look up for any new updates by clicking the Check for updates button