Microphone not detected

To cover the specs first:
Asus P5N-D with Nvidia 750i chipset
4GB DDR2 PC6400 800mhz ram
Windows 7 x64 Ultimate

The problem:
Any mic plugged into any of my input jacks (Line-in, Front Mic, Back Mic) Is not detected as plugged in or, when detection is ignored, does not pick up any sound.

Attempted solutions
Installed windows 7 default drivers (Didn't work)
Installed Asus Drivers from website (Didn't work)
Installed Realtek Drivers from website (Didn't Work)
Ran all three driver installs in compatibility mode for Windows Vista (Didn't work)
Tried installing drivers while Windows 7 automatic driver install was disabled (didn't work).
Plugged in a USB mic (Worked but doesn't resolve problem as I prefer my 3.5mm mic)


I know they worked previously but can't recall exactly how long ago as I never used a mic much before. They work in Ubuntu 10.10 and Debian Squeeze as well as a multitude of other distro live cds.

If I can't fix the problem soon I am contemplating upgrade installing windows 7 again or clean installing (Really dreading reinstalling programs and settings if the latter is necessary)

Any help or ideas would be greatly appreciated

Edit: Forgot to mention that when preventing automatic windows update only one of 5 "Audio Devices" installs when I install the audio drivers. Manually pointing them to the driver folders just gives me a "No Drivers Found" error.
I have attached a picture after all drivers have been uninstalled (When they are the only thing that is different is that one of the Audio device entries moves to sound and game controllers with the name realtek