Microphone not working

[the-trooper]

Hello forum

I'm running Windows 7 ultimate 64 bit, both as a host and as a guest (same installation).
In host microphone and all inputs are working properly (line in, mic in, front panel mic in). However, guest only detects front panel mic input (the only one in the list for recording devices), and it says "this device is running properly", but there is no sound. I've tried pluging it in the back mic in and line in, but nothing.
I've tried all Host Audio driver and Audio controller combinations, but no luck. Sound output works OK.

VirtualBox 4.3.10 with Guest additions installed.
Log file attached.

What can i do? Thanks in advance!

[socratis]

What can i do?

Not that much. VirtualBox is virtual hardware, not actual, physical hardware. I consider myself "lucky" to even have sound in and out .