first time set up

I just installed this program and am unable to get my mic to work with it. I know it is not my mic as I can use it in several other programs I have. I have already trouble shooted within the site.

What sort of mic? How is it connected to the computer? Which version of Audacity? Which version of Windows? What settings do you have in the Device Toolbar? Did you connect the mic before opening Audacity?

Sigma Tel High Definition Audio CODEC, connected in the back to the jack, Audacity 2.1(whatever the current one is), Vista and I have MME, speakers sigma tel high def., microphone sigma high def. 2 stereo input channels

mic is always connected

Check in the Windows Sound Control Panel that the recording volume for the mic is turned up. If there is a “boost” option, you may also need to enable that. “Enhancements” should be turned off (See: Why do my recordings fade out or sound as if they were made in a tunnel?)

that did not work, I have updated my drivers and shut the pc down completely

What didn’t work?
Is the microphone working? Can you see the green meter bar responding to your voice in the Windows Sound Control Panel?

everything you have suggested has not worked so far. I went on Microsoft’s website and even trouble shooted my pc, still not working. It worked until I downloaded Audacity.

We can’t see your computer. We can’t see what you are doing.
“Not working” tells us next to nothing.
We can’t help you if you don’t tell us what you are doing, what is happening and what is not happening,

What worked ?

I was using the jack in the back of my desktop pc for voice recordings via a website. I then downloaded Audicity and now the jack seems to not be working as I cannot voice record via the mic on any programs, including the one I had used previous to downloading Audicity. The mic works on my laptops so I know this is not a mic problem I have also tried several other brands of mics that work on other computers but again not on my desktop now. the following are the directions I have done so far that has not worked;

To test the microphone, speak into it. To test line-in, send a signal to the line-in port from the source audio device (press play from the audio player). Look at the gray bars next to the device name on the recording tab:
If the gray bars next to the device name change to green, this device is active and an audio signal is being passed through the microphone or line-in port. This step shows that problem is related to sound settings in the software that uses the microphone. If you have not already done so, set the selected device to default and adjust the levels. Once the device is set to default and the levels are set, use and adjust the sound recording or voice carrying software.
If the gray bars remain gray and inactive, the device is not recognizing a signal. Leave the recording tab open and go to the next step. I HAVE NO GRAY BARS

Step 3: Check volume levels and mute ALL CHECKED AND SET PORPERLY

The speaker volume for the microphone and line-in may be muted or turned down. Use the following steps to check the speaker volume levels for line-in and microphone.

Click Start, and then click Control Panel.
Click Hardware and Sound.
Click Sound.
Select Speakers, and then click Properties.
Click the Levels tab.
Click the Muted button next to Microphone and any other line-in that is muted.
Use the slider bar to raise the level for Microphone and each line-in to at least 75.
Click OK. DONE

Step 4: Update the audio drivers

You may find that a front microphone port does not work, a recording device is missing from the recording tab, a microphone is not recognized when it is plugged in, or other problem. There may be updated audio drivers that can fix these types of issues. Use the following steps to make sure audio drivers are up to date.

Connect to the Internet.
Click Start, and enter device manager in the Start search field.
Click the plus sign, next to Sound, video and game controllers.
Right-click the name of the sound hardware and select Update Driver Software…
Click Search automatically for updated driver software and wait for Windows to update the driver software.
Windows checks a remote Web site to see if updated driver software is available.
If an update is available, let Windows install the update.
If an update is not available, skip to the next step.
Once the update is installed successfully, test the microphone or line-in as was done in step 1. If the problem persists, go to the next step. ALL MY UPDATES WERE CURRENT

Step 5: Configuring Windows recording settings

By default, Windows Vista automatically enables microphones and line-in ports. Use the following steps to set the microphone/line-in port to be the default port and to configure the recording levels.

If the Recording tab in the sound window is not selected, open the Sound window and click the Recording Tab and make sure that the status is set as below.

1 - Microphone port - working and set as default

2 - Line In - working

3 - Digital In (S/PDIF port) - working

4 - Stereo Mix (Software mixer) - Disabled

If multiple microphones or line-in ports are available, select the port that you want to use. Click Set Default to make this device the default audio input device.
If the device you want to use contains a small circle with an arrow pointing down, the device is disabled. To enable the device, right-click the device name and select Enable.
With the device selected, click Properties, and then click the Levels tab.
Adjust the slider until to 75% of its range.
If Mute is on, click the mute button to unmute the device. The mute button should show as a blue speaker without any red circle.
If Microphone Boost is available, adjust to +20.0 dB. DONE

Plus I followed the forums and suggestions from the Audicity site and previous forums … still not working.
hopefully this helps…

If your microphone is working, you should see green bars here:
This has nothing to do with Audacity. This is your microphone, sound card and operating system. If this is not working Audacity cannot use the microphone because it is not working. You need to get this working first, then we can look at getting Audacity to use it.