HELLO, NEW HERE MY SOUND ITS GONE, NEED SOME HELP!

Hello. The audio system on your model is IDT. If it says "Intel" that would be because the IDT audio driver is not installed, but there is a generic Intel audio driver in the Windows operating system that is being used instead.

The IDT audio chip is mounted directly on the motherboard.

I think the first thing you should do is to check to determine whether the audio hardware is damaged or not.by running the audio tests in Dell Diagnostics. These interactive audio tests are designed to narrow down the problem to either the software or hardware. The tests are independent of Windows and drivers, meaning it doesn't matter if those are working correctly or not. To run Dell Diagnostics

1. Restart the computer and tap the f12 key as soon as it starts to boot up .
2. Select 'Diagnostic' from the boot menu. The computer will run its pre-boot assessment tests (PSA) before Dell Diagnostics starts. During the PSA you will hear some tones through the system speaker but this does not adequately test the audio hardware. Dell Diagnostics plays an instrumental piece of music complete with drums, so if you only hear some tones then you have only run the PSA.
3. Dell Diagnostics should open after the PSA tests, or you should see an option to open it. If you have ever reformatted your entire hard drive then Dell Diagnostics will no longer be there as an option. In that case run it from the Drivers and Utilities (Resource) CD if you have one.
4. Select 'Custom', then the audio tests. (At this point - after you have opened Dell Diagnostic custom - if you can't find the option to select the audio tests that is a symptom of a failed audio chip.)
5. The tests will run. Alternate between using headphones and listening to speakers in case only one signal path is working.
The tests will play some audio and ask you whether you heard it.
6. If you don't hear the music during the test it definitely means there is a hardware failure somewhere in the system. In this case Dell will repair the computer if it is still under warranty.
7.If you do hear the audio during the test but not when you boot back into Windows, that almost always means the hardware is okay but there is a problem with the audio driver or with Windows.
8. Error codes: If you answer 'no' to any question that the test asks you, the test generates an error code that can tell a Dell technician that you answered 'no' to that question. The test does not know the exact component that has gone bad. Before answering 'no' to a question, make note of the circumstances at that point so you will know in general what the error code means.

So if the tests fail, I would say your audio is dead and to fix it you would have to replace the motherboard. If the tests pass, then you may be able to restore your audio by reinstalling the IDT audio driver.

Hi, thank you for the info, but still no results.  When I right-click on the audio icon, I click on troubleshooting, and I get - PROBLEM FOUND: hardware changes might not have been detected -.  When I go to SERVICES, then go to the windows audio name, and click on it to make it start, an small box pops up, and looks like it scans and I see the bar filling up, but only goes 1/10th of the way and goes away.  When I go to DEVICE MANAGER, the audio icon its no longer there.  Said an audio input nor output devices are installed.  And when I go into SYSTEM INFORMATION,  I click on components, then sound device, the page comes back blank.  Does this mean that I need to buy a new motherboard, because I had dell replace a lot of stuff in my laptop, and one of them was the motherboard.  If so, thank you for your time and help!

Sorry, almost forgot, trying to install driver and software back and I get a message that said to uninstall sigmatel first, but already did, but still get it and also I get one that said : CONFIGURING IDT AUDIO DRIVER AND APPLICATION: _ExitError: Error=Device Object not present, restart the system and run setup again.

You should first check to determine whether the audio hardware is damaged or not.by running the audio tests in Dell Diagnostics. The tests are independent of Windows and drivers, meaning it doesn't matter if those are working correctly or not. To run Dell Diagnostics

1. Restart the computer and tap the f12 key as soon as it starts to boot up .
2. Select 'Diagnostic' from the boot menu. The computer will run its pre-boot assessment tests (PSA) before Dell Diagnostics starts. During the PSA you will hear some tones through the system speaker but this does not adequately test the audio hardware. Dell Diagnostics plays an instrumental piece of music complete with drums, so if you only hear some tones then you have only run the PSA.
3. Dell Diagnostics should open after the PSA tests, or you should see an option to open it. If you have ever reformatted your entire hard drive then Dell Diagnostics will no longer be there as an option. In that case run it from the Drivers and Utilities (Resource) CD if you have one.
4. Select 'Custom', then the audio tests. (At this point - after you have opened Dell Diagnostic custom - if you can't find the option to select the audio tests that is a symptom of a failed audio chip.)
5. The tests will run. Alternate between using headphones and listening to speakers in case only one signal path is working.
The tests will play some audio and ask you whether you heard it.
6. If you don't hear the music during the test it definitely means there is a hardware failure somewhere in the system. In this case Dell will repair the computer if it is still under warranty.
7.If you do hear the audio during the test but not when you boot back into Windows, that almost always means the hardware is okay but there is a problem with the audio driver or with Windows.
8. Error codes: If you answer 'no' to any question that the test asks you, the test generates an error code that can tell a Dell technician that you answered 'no' to that question. The test does not know the exact component that has gone bad. Before answering 'no' to a question, make note of the circumstances at that point so you will know in general what the error code means.

So if the tests fail, I would say your audio is dead and to fix it you would have to replace the motherboard. If the tests pass you may be able to restore your audio by reinstalling the IDT audio driver or by restoring your computer back to the factory configuration.

I get a message that said to uninstall sigmatel first, but already did

Your  model should not  have had a Sigmatel audio driver in it.