Assuming dword is required, the following 2 results were found.
In the right pane of Explorer, right click on a empty area, click on New > DWORD (32-bit) Value > type NoDrives > Enter. Right click on the DWORD you just created and click on Modify. Type in the drive option hex or decimal number from the list below...
> Run > Regedit > OK Browse to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer Create New DWORD Value Name it "MaxRecentDocs" Double-click on the new DWORD Set value data to "19" ( equals 25 ) Leave Base as "Hexadecimal" OK...