Windows 7: how to detect inbuilt mic ?

my laptop came with vista installed which i later upgraded to 7.since then its inbuilt mic(which worked just fine earlier) adjacent to the camera hasnt been working. i have the Ricoh camera driver installed but it does not include any driver for mic. i searched the specifications of my model vgn-fz35gn but no where is the model or maker listed on the internet.Even the device manager dosent show any hardware devices whose driver may be missing , so getting the hardware id is also not possible. what should i possibly do to let 7 know that theres an inbuilt mic in the laptop ?
(Theres one way - by using system recovery but it would bring back vista on c: and i dont wanna engage in that process)

your mike shouldn't need a driver - it should 'just work' - it won't show up in device manager either - that's normal

maybe you actually need to 'turn it on' and turn up the recording level. it's a bit of a lengthy process, but you only need to do it once.

control panel >> hardware and sound >> sound >> recording tab

you should see an entry for a microphone here

click on it >> configure >> levels >> turn it right up and turn on boost if you have that option

good luck and please let us know if it works, or if you need more help

nailed it , totally works!!! you're the man !!

i always knew it - nice to have it confirmed!

glad i could help