Part of Acer Launch Manager (by Dritek System Inc.). Controls the wireless on/off button?

File properties show it's by The TechGuys - a PC support service found in Currys, PC Wolrd and Dixons in the UK. What does it do and is it required?

Remote control driver for the mow discontinued REALmagic Xcard and Hollywood+ hardware-accelerated MPEG decoder cards from Sigma Designs

Suspect as the file is located in %ProgramFiles%\Internet Explorer

The file is located in %Windir%. What does it do and is it required?

Installed with the 32-bit 10/8/7/Vista drivers for on-board Realtek HD audio codecs. The exact purpose is unknown at present

Installed with the 32-bit 10/8/7/Vista drivers for on-board Realtek HD audio codecs. The exact purpose is unknown at present

The file is located in %Windir%. What does it do and is it required?

Installed with the 32-bit 8/7/Vista drivers for on-board Realtek HD audio codecs. The exact purpose is unknown at present but based upon the filename it may be used to provide on-screen volume level changes

Installed with the 64-bit 8/7/Vista drivers for on-board Realtek HD audio codecs. The exact purpose is unknown at present but based upon the filename it may be used to provide on-screen volume level changes

Installed with the miniport drivers for Promise hard drive controllers in both RAID and non-RAID installations. May be necessary in order to maintain preferences applied to the RAID array connected to the Promise controller

The file is located in %Root%

Could be a left-over from the installation of a Viewsonic flat panel display

RaptorMobile VPN client from Axent Technologies (now part of Symantec). Runs as a service on an NT based OS (such as Windows 10/8/7/Vista/XP). No longer available