Speaker Problam- Inspiron 17R 5721

Test the speakers with the ePSA (PSA) tests.

Re-start the computer and at the Dell logo screen tap the F12 key until the One Time Boot menu appears (if the computer boots to Windows turn the computer off and try again).

At the One Time Boot menu, press the down arrow key to highlight Diagnostics, then Enter.

Look for a "Perform Quick Audio Check" button on the bottom right side of the ePSA main menu screen. Press the button and check if you can hear the beep tones from the speakers.

If you do not have the "Perform Quick Audio Check" button then do this. Start the PSA tests and when it performs the color test it will ask you if you see the color bars on the screen. Deliberately fail the test by answering no (press the "n" key) instead of yes. When you do that the PSA test will emit a series of beeps. Listen for the beeps.

If you don't hear the beep tones from the left speaker it might help to try reseating the cable to the motherboard, but the speaker has probably failed. Contact tech support if still under warranty.

If you do hear the tones that means that the speakers are working and are connected. In that case try re-installing the audio driver from the Inspiron 17R 5721 downloads page.