Error code 21 or 1117

My cd/dvd is in device maneger and is showing that is runing fine but when i run intel test I am getting error code21 or 1117 .At time of this problem I find that one hardwer in device maneger is unknowen so I can’t reInstall it becouse I don’t know what is it?
Please help
My cd/dvd is SOHW-1633s