Removing right click items in Windows

When you right click a big list may pop up as right click. It is annoying especially if you are having a slow computer. This is how to remove it.
First take note of the entry in right click
Then Start>run
Type regedit click OK. This opens the registry editor.
Now Navigate to
HKEY_CLASSES_ROOT\Folder\shell
HKEY_CLASSES_ROOT\file
HKEY_CLASSES_ROOT\Directory\shell
Delete the entry you noted as the entry in right click menu.
You may have to reboot for changes to effect.