SAlut.
spuneti-mi va rog cum pot sa-mi instalez microfonu in calc? Am bagat la culorile care trebuia dar oricum nu merge, castile functioneaza dar microfonul nu, am incercat alt tip de casti cu microfon si la fel nu-mi merge nici asta, oare de ce?

Note that the microphone is not listed individually in Device Manager because it works through your sound card. Perform the steps in the following sections in order, and then test to determine if your issue is resolved after each section.

NOTE: The microphone should be selected as the recording device in the Volume Control tool(sndvol32. exe).

To verify this, follow these steps:

1. Click Start, and then click Run.
2. In the Open box, type sndvol32. exe, and then click OK.
3. Click Properties on the Options menu.
4. In the Adjust volume for box, click Recording.
5. Click OK.
6. In the Microphone box, verify that the Select check box is selected.

Sursa
http://support.microsoft.com/kb/266677

Daca tot nu functioneaza.
Click dreapta pe iconita de langa ceas ( in caz ca ai placa de sunet realtek ) te duci la Mixer debifezi rubrica microfon care e cu rosu si Ok.