no audio output device installed dell Inspiron 5559

No audio output device installed

Hello. Are you saying that you are getting an error message that says "No audio output device installed?"

Run the Quick Audio check in the ePSA diagnostic. If the test fails then you should contact tech support to have the laptop repaired.

> Re-start the computer and tap the F12 key as soon as it starts to boot up. If the computer boots to Windows re-start the computer and try again.

> Select 'Diagnostics' from the boot menu, then press the Enter key. Either the ePSA or the PSA tests will open -- it depends on the model of your laptop.

> Look for a "Perform Quick Audio Check" button on the bottom right side of the ePSA main menu screen (see screen shot below). Press the button and listen for 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 that means that the speakers have become disconnected or have failed.

Here is a screen shot of the ePSA Quick Audio test:

If you have the older PSA test you will not have the "Perform Quick Audio Check."

If you do hear the tones but you still see the error message even after reinstalling the Realtek audio driver, there could be failure that went undetected by the test. Contact tech support, or I can suggest some tests that are more definitive but they are a bit time consuming.

First of thanks for the reply

Beeps are heard loud and clear during this test

What other solutions do you have

By the way I recently got the machine repaired £70 for a none screen working and replace cmos battery

1. Check BIOS setup to make sure all settings are normal.

2. Perform a full system recovery (revert the laptop to the original factory configuration) by using the Factory Image, or if that has been removed use the recovery media that should have been created when the laptop was first used. A system recovery will fix all software errors that would keep the audio from working, so if it doesn't work after the recovery then there has been hardware failure. Note that a system recovery won't affect the BIOS -- that is what step 1 is for.

3. A sort of substitute test that is easier than a system recovery is to download  Linux Live and install it on a flash drive. Boot up to the flash drive and test the audio. Whatever problems there might be in Windows and the Windows drivers won't exist in Linux, so if the audio works ok in Linux then there is a software problem that exists when in Windows. If the audio does not work in Linux then that strongly points to failed hardware. The Linux test is a strong indicator but it is not a 100% definitive test like system recovery is.