This error message is a Windows-generated one. It is "code 0x5 is Access Denied" due to lack of Windows Administrator rights or the "regsvr32.exe" file is missing.
Please be sure you are logged as a Windows administrator, with full access rights to the Windows Registry. Also, disable the UAC.
If all steps above are met, kindly check if the "regsvr32.exe" file is present on your computer.
Lastly, check that your anti-virus/spyware/firewall software is not preventing Driver Genius from updating the Windows registry.