Hi,

  1. Dell Audio Controller Driver Download Torrent
  2. Dell Audio Controller Driver Download
  3. Dell Optiplex Gx270 Multimedia Audio Controller Driver Download
  1. If it is an external device, what is the make and model of multimedia audio controller?
  2. Have you made any recent hardware or software changes to the computer prior to this issue?

Try the steps mentioned below and check:

Dec 12, 2015 - SHA-256: e11b484bc3306faf19b3b949dd0cc842ab18fac80ba075d7cbf99c. By downloading, you accept the terms of the Dell. Get drivers and downloads for your Dell OptiPlex GX620. Download and install the latest drivers, firmware and software.

Method 1:

Step 1: Run “Hardware and Devices Troubleshooter”:

Step 2: Check status of hardware in Device Manager. And also check whether the device listed under “Unknown devices”.

a)To open Device Manger, click Start, click Run, and then type devmgmt.msc and press Enter key.

b)In the Device Manager, locate the device.

c)If the device is not listed, check whether the device listed under “Unknown devices”.

Method 2: If the device is listed under Unknown Devices, download the driver for the device.

Driver

Reference link:

Dell Audio Controller Driver Download Torrent

How to troubleshoot unknown devices that are listed in Device Manager in Windows XP

Dell Audio Controller Driver Download

If the issue persists, post your reply with more information. This helps us to assist you better.

Dell Optiplex Gx270 Multimedia Audio Controller Driver Download

Hope it helps.