Open your registry using regedit from start menu --> run.
Create a new DWORD value, or modify the existing value called 'NoRecentDocsHistory'
User key: [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\
Explorer]
System key: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\
Explorer]
Value Name: NoRecentDocsHistory
Data Type: REG_DWORD (DWORD Value)
Data Value: (0 = disable restriction, 1 = enable restriction)
Exit your registry.
Restart for the changes to take effect.