Number of buttons supported on mouse

Hits: Failed to execute CGI : Win32 Error Code = 3

Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Services\BUSMOUSE\parameters
Key: SYSTEM\CurrentControlSet\Services\SERMOUSE\parameters
Key: SYSTEM\CurrentControlSet\Services\i8042PRT\parameters PS/2 style
Name: NumberOfButtons
Type: REG_DWORD
Value: 3