Windows 7 - Very low sound after using Microsoft Cinema LifeCam.

Hello, my sound has been incredibly low after using a Microsoft Cinema LifeCam yesterday, aswell as having lots of static and distorted sounds when watching YouTube or anything in WMP. I've already tried:

1. I have tried raising all the levels from every device all the way to the top
2. I have changed the settings under Communications to > Do Nothing
3. I have uninstalled the drivers and re-installed. Downloaded the driver from Realtek and re-installed and also uninstalled the driver and re-installed automatically using windows 7 wizard.
4. I have checked for any errors in my sound card using Sound troubleshooter and everything seems to be OK with the sound card.
5. I also updated my drivers
6. I used different set of speakers and headphones but still no luck
7. I changed the plug from headphones to the hole in the back

Sometimes the sound level go back up again to a normal level but drop soon after.
Similiar post: Windows 7 - Sound at very low level or no sound

Are you using the Dell supplied sound driver? (what model Dell?).

Does this happen on both PC speakers and headphone?

Check the front panel headset/mic connection on the motherboard. "Reseat" (unplug then plug back in) the connector for the headset/mic at the motherboard.

The Dell manual shows where the audio connector is located.

http://www.dell.com/support/troubles...oduct/xps-8300