Try this method to see whether the microphone is muted or not. Download Dell EMC PowerMax Studio and enjoy it on your iPhone, iPad, and iPod touch. I installed CentOS 5 on my Dell Studio 540 with RAID Array in dual boot with MS Windows Seven.
Without the Vault drives its no real use, but eventually I will get them, D. Download Now DELL STUDIO 1555 MICROPHONE ARRAY DRIVER