Plus HDV31.01 is a software developer for Windows.
It is reported that the following Windows processes are part of PlusHD Cinema 2.1cV31.01:
If you want to remove PlusHD Cinema 2.1cV31.01 from your computer, just go to Start > Control Panel > Add/Remove programs and select PlusHD Cinema 2.1cV31.01 from the list of programs.