Hide My Recent Documents
HKEY_CURRENT_USER/Software/Microsoft/Windows/Curre ntVersion/Policies/Explorer
Click Edit > New > DWORD Value and give name NoRecentDocsMenu.
Then double click at those DWORD Value, and once again give value 1 to activated.

Hide My Recent Documents
HKEY_CURRENT_USER/Software/Microsoft/Windows/Curre ntVersion/Explorer/Advanced
Double click Start_ShowRecentDocs and insert value 0 in Value Data.