HIDServ.exe
(Microsoft)
Microsofts Human Interface Device Audio Service for Windows 98SE/ME/2000/XP. This background service is entirely to do with USB and provides support for Audio devices attached to your USB ports, and for Audio controls operating through a USB connection. This process will typically be needed if you run a multimedia USB keyboard where you can control volume and other audio aspects, or if you use a USB gaming joystick which gives you the power to control the audio aspects of your PC.
Recommendation :
If you do not use any of the above, disable using Startup Manager, then test that your PC is running fine. In Win98SE/ME/2000 disabling it should not cause you any problems we have however experienced one or two problems disabling this service under Windows XP.