USB Microphone
 

Having problems with my Plantronics Digital DSP 400. Working beautifully for months until last night it stopped, well, stoppedish.

The computer recognises the headset being there. The headset receives sound like it should, but the microphone has no input. It's not muted, the software it comes with it up-to-date but can't hear the mic either. Micro$oft sound recorder cannot hear it and neither can TeamSpeak.

Reinstalled the software and also tried doing a system restore. No joy.

Tried playing with Windows volume control (tried both Recording/Playback settings), with nowt! It's not like it's had a hard hit/damage, just stopped mid way through a session on TeamSpeak. All rather confusing.

Any advice?