crackling speakers on N5110

Unfortunately there are no Windows 10 drivers for your laptop model.

Probably unsupported by Dell.

Guys same problem here

Hello. Sorry but no idea who you are addressing -- seem to be referencing a previous thread.

just wondering if this has anything to do with perhaps some Win 10 upgrade caused this as were working fine before and a longtime  after Win 10 upgrade

If the speakers were working okay after the upgrade then I would think the upgrade was benign.

I had Microsoft Disability Desk  check this out to ensure all drivers were updated

If they said the drivers are all "updated" that is meaningless as far as audio, because your laptop has IDT audio hardware and the IDT company never made a Windows 10 audio driver. That company is no longer in the consumer audio business. For best audio results you should stick with the operating system that was installed at the factory, probably windows 7.

If you want to keep trying to use win10, try installing the IDT audio driver for Win7  using compatibility mode.

First completely remove the IDT driver that is currently installed, if any (might not be one). Look in the Device Manager under Sound...Controllers. If there is an "IDT High Definition Audio Codec", right click on it and select to uninstall. You will be asked if you want to remove the driver software for the device. Check the box (yes). Restart the laptop. Go back to Device Manager and make sure that "IDT High Definition Audio Codec" is gone. If it is there again, keep repeating the process until all instances of IDT High Definition Audio Codec have been removed. If you see "High Definition Audio Device" that is okay -- just ignore it.

Now download and install the IDT audio driver for Win 7. It is 5 years old but is the "newest" one.

1. Download and save the audio driver to your desktop or any convenient location on the hard drive. 
2. Double click on the new folder to extract (unzip) the driver files.
3. The extractor wizard will create a new folder for the driver files. It will be at "c:\dell\drivers\xxxxxx". Write down the exact location that the wizard creates.
4. If the driver begins to install automatically, halt (cancel) the installation.
5. Browse to the driver files on the hard drive (the location you wrote down).
6. Find the "setup.exe" file.
7. Right click on setup.exe to open the context menu.
8. Select the Properties.
9. Select the Compatibility tab.
10. Check the box "run this program in compatibility mode for "... Win7".

I rely on this as my outside world for lots including charity fund raising and shopping PLEASE help as disabled retired veteran .thank you.

When you take out the major software in a computer, the operating system, and replace it with a different one, you can expect some hitches. It's like replacing the engine in your car with a different model engine and expecting it to fit together with the original transmission. Since the computer is very important to you, you might want to consider reverting the laptop back to its original factory configuration (Factory Image Restore) so that it will have a good working configuration.

Thank you for your service to our country.