Your OS version history's left me scratching my head here. <w>
1, Assuming you purchased a McAfee subscription and a McAfee application was always installed while you were running Vista, was your subscription still current when you 'when you 'upgraded to Win8?' Mcafee was on vista and when I went to win 8 I did not re-install it
2. Was Win7 ever installed and if so, was it an upgrade or did you format the HDD & do a clean install of Win7? ..what, if any, third-party anti-virus application was installed when you were running Win7? Windows 7 was never on this laptop, purchased it with vista on it
3. Did you purchase Win8 or..? yes

1. Dell Audio Update For Windows 10
2. Dell Sound Drivers For Windows 10 64 Bit
3. Dell E6400 Sound Driver Windows 10
4. Dell Xps L502x Sound Drivers Windows 10

4. Were you running Win8 or Win8.1 when you upgraded to Win10? I am pretty sure 8.1 when I went to win 10
5. When (approx. date) did you upgrade to Win10? the first month it came out
6. Did you choose to upgrade to Win10 manually or was the upgrade offered AND INSTALLED via Windows Update? upgrade was offered and installed via windows update
<< After upgrading my Dell Inspiron 1420 to Windows 10, I have never had audio come out on the laptop speakers.>>
7, Were the speakers working before you upgraded from Win8 to Win10? yes
8. Is KB4048954, KB4049011, and/or KB4048951 offered to your computer when you run a manual check for updates and if so, does one or more of the updates successfully install? KB4048954 recently failed and I will attempt a retry, KB4049011 is on iKB4048951 is also on it

Keep in mind this is a laptop and simply exchanging a sound card isn't an option either

Nov 26, 2017  I have attempted everything including contacting Dell and installing their recommended driver. I have a feeling it is the audio chip driver on the laptop. The company Sigmatel is no longer in business and no drivers are being updated to Windows 10.

1. Realtek audio driver windows 10 dell free download - Audio Driver Realtek Ver.5.10.0.5273.zip, RealTek Audio Driver 5.10.0.5440.zip, Audio: Realtek ALC888 HD Audio Driver Version A00, and many.
2. Dell Audio Drivers Today I am going to share one of the most important and useful drivers for our Dell PC user that is Dell Audio/Sound, the driver. You can get Dell Audio/Sound driver for windows 10 from here absolutely free. Here we provide Dell Audio Software for Dell Laptops user which helps to improve.

After you upgrade your computer to Windows 10, if your Dell Sound / Audio Drivers are not working, you can fix the problem by updating the drivers. It is possible that your Sound / Audio driver is not compatible with the newer version of Windows.

How to Update Device Drivers

There are two ways to update drivers.

Option 1 (Recommended): Update drivers automatically - Novice computer users can update drivers using trusted software in just a few mouse clicks. Automatic driver updates are fast, efficient and elimate all the guesswork. Your old drivers can even be backed up and restored in case any problems occur.

OR

Option 2: Update drivers manually - Find the correct driver for your Sound / Audio and operating system, then install it by following the step by step instructions below. You’ll need some computer skills to use this method.

Option 1: Update drivers automatically

The Driver Update Utility for Dell devices is intelligent software which automatically recognizes your computer’s operating system and Sound / Audio model and finds the most up-to-date drivers for it. There is no risk of installing the wrong driver. Mach 3 tutorial video. The Driver Update Utility downloads and installs your drivers quickly and easily.

You can scan for driver updates automatically with the FREE version of the Driver Update Utility for Dell, and complete all necessary driver updates using the premium version.

Tech Tip: The Driver Update Utility for Dell will back up your current drivers for you. If you encounter any problems while updating your drivers, you can use this feature to restore your previous drivers and configuration settings.

1. Download the Driver Update Utility for Dell.

2. Double-click on the program to run it. It will then scan your computer and identify any problem drivers. You will see a results page similar to the one below:
   

3. Click the Update Driver button next to your driver. The correct version will be downloaded and installed automatically. Or, you can click the Update Drivers button at the bottom to automatically download and install the correct version of all the drivers that are missing or out-of-date on your system.

Option 2: Update drivers manually

To find the latest driver, including Windows 10 drivers, choose from our list of most popular Dell Sound / Audio downloads or search our driver archive for the driver that fits your specific Sound / Audio model and your PC’s operating system.

If you cannot find the right driver for your device, you can request the driver. We will find it for you. Or, try the automatic option instead.

Tech Tip: If you are having trouble finding the right driver update, use the Dell Sound / Audio Driver Update Utility. It is software which finds, downloads and istalls the correct driver for you - automatically.

After downloading your driver update, you will need to install it. Driver updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow. Visit our Driver Support Page to watch helpful step-by-step videos on how to install drivers based on their file extension.

Dell Audio Update For Windows 10

Dell Sound Drivers For Windows 10 64 Bit

How to Install Drivers

Dell E6400 Sound Driver Windows 10

After you have found the right driver, follow these simple instructions to install it.

Dell Xps L502x Sound Drivers Windows 10

1. Power off your device.
2. Disconnect the device from your computer.
3. Reconnect the device and power it on.
4. Double click the driver download to extract it.
5. If a language option is given, select your language.
6. Follow the directions on the installation program screen.
7. Reboot your computer.