Not sure if this has been covered elsewhere (I did try looking for other posts, but got scared by the number of posts regarding "microphone"). Anyway, it seems that Fedora "forgets" about my microphone every time I reboot. I never change any of the settings, but Skype and Gizmo (and no doubt other microphone recording software) cannot hear my microphone after a reboot. The only solution I've found to this (which is annoying) is to go into the volume control on Gnome, and unselect then reselect "Mic" as the input source.
Not sure if this helps, but lspci reports this as being my audio controller:
00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 03)
Any help regarding this would be most appreciated as the current method is quite annoying (especially if I get a call and have forgotten to alter the settings!)