Unknown Device Listed in Device Manager Under “Other Devices”
Trouble Possible Cause Corrective Measure
1.  

I’ve just reinstalled my Windows OS, and one or more devices are listed as Unknown Devices or as devices with a yellow exclamation mark next to them.

a) Drivers for your device(s) are missing or not installed. Windows OS will only install built-in drivers, not the specific device drivers. 

b) Windows is using a generic driver, which doesn’t support all of the functions.

c) The missing driver of one device is causing issues for another device. For example, the motherboard or chipset drivers must be installed first, otherwise most of the other devices will not function and will be listed as “Unknown Devices.”

d) Your driver installation CD is outdated

For “c)” and “d)“, Run a Free Driver Scan to find out exactly which drivers are missing and which drivers are outdated.

To learn more about this tool, please Click Here.

Install drivers for your device(s) 

1. Go to the Device Manager

2. Right-click on the Device

3. Click on “Properties”

4. Under the General Tab, you should be able to see the “Device Status.” It may state something like:

  • This device is not configured correctly (Code 1)
  • The drivers for this device are not installed (Code 28)

5. Click on the “Update Driver…” or “Reinstall Driver” Button

6. Follow the On-Screen instructions and select the option for specifying location of your driver files.

7. Insert your installation or driver backup CD

(The process for this varies from manufacturer to manufacturer, and whether it’s a complete system backup CD of just a single device backup CD. So, make sure to follow the instructions carefully).

(Installation CD is Missing or Outdated? Consider using Automatic Driver Update/Repair Tool to automate the process and keep all your drivers up-to-date and eliminate trial and error approach. Automatically create backup driver file for the future use.).

Click HERE to learn more about this sophisticated tool with Driver Scanning Engine.

 

2.  

I’ve just upgraded my Windows OS (e.g. From Windows XP, Vista to Windows 7), and one or more devices are listed as Unknown Devices or as devices with a yellow exclamation mark.

a) You installed wrong or incompatible drivers (e.g You have the installation CD with Windows XP drivers only, or drivers for a 32-bit OS Type and now you are using a 64-bit OS Type) 

b) The drivers for your device(s) is/are not installed or missing. Windows OS will only install build-in device drivers for devices such as keyboard, mouse, and disk drives.

a)  

1. Easiest solutions that saves time and energy: Use a sophisticated driver update and repair tool.

Run a Free Driver Scan to see which drivers are missing and to see which devices are using outdated, wrong, or incompatible drivers.

To learn more about the features and benefits of this toll, please click HERE.

 

b) You have the installation CD with the latest drivers:

1. Go to the Device Manager

2. Right-click on the Device

3. Click on “Properties”

4. Under the General Tab, you should be able to see the “Device Status.” It will say something like:

  • This device is not configured correctly (Code 1)
  • The drivers for this device are not installed (Code 28)

5. Click on the “Update Driver…” Button

6. Follow the On-Screen instructions and select the option for specifying location of your driver files.

7. Insert your installation or driver backup CD

(The process for this varies from manufacturer to manufacturer, and whether it’s a complete system backup CD of just a single device backup CD. So, make sure to follow the instructions carefully).

If you don’t have the installation CD with the latest drivers, Click HERE to consider the benefits of the Automatic Driver Update/Repair tool.

3. 

I am trying to install a new device, and it’s being listed as “Unknown Device” or “Device with a Yellow Exclamation Mark Next to It” (e.g. Video Card, External Hard Drive, Webcam).

a) Device in not plugged in correctly. For example, USB cable is not plugged in all the way, or PCI card is not fully inserted into the PC slot. 

b) You installed the wrong of incompatible drivers. For example, you are using Windows 7, and the driver you installed is for Windows XP or Vista. Another possibility is that you installed the driver for the wrong OS type. For example, you are using a 32-bit OS, and the driver you installed is for a 64-bit OS.

(Automatic driver update and repair highly recommended – Learn about its benefits)

a)  

1. Inspect all connections (e.g “if a USB device, then USB cables and USP ports”, “if a PCI card, inspect if it is inserted properly)

2. Restart your computer

3. When the computer restarts, your Operating System will try to locate and reinstall the drivers for your device

4. You may be prompted to insert the installation CD

5. Follow the on-screen instructions.

b) Check your Windows OS Type and download the correct drivers:

1. Click on Start or Windows button

2. Right-click on Computer

3. Click on Properties

4. System Type is either “32-bit Operating System,” or “64-bit Operating System”

5. Go to the Manufacturer website and carefully identify and download the correct operating system and type drivers.

To consider the features and benefits of the automatic drive update tool, please click HERE.

4.  

I’ve experienced “Unknown Device” problem in the Device Manager all of a sudden.

a) Device driver is damaged or corrupt, including a corrupt PC driver registry entry. This can happen due to an unexpected system error, which corrupts PC registry. Also, some software updates may require an updated driver in order for all new features to become supported. The outdated driver not being able to support these updates becomes corrupts the registry entry. 

Using a tool that fixes registry errors and updates drivers is recommended. By keeping your drivers up to date and cleaning registry entries regularly, you will maintain good performance of your.

To learn more about this tool and run a Free System Scan, Click HERE.

b) Outdated device driver can be another cause of this problem. Similar to the point stated in “a“, the updated version of the hardware device software may require the latest version of a driver to support new features. Also, there may be some bugs present in the outdated version of the driver, and a manufacturer has identified this problem and released the updated version.

a) Update or Reinstall device driver 

1. Go to the Device Manager

2. Right-click on the Device

3. Click on “Properties”

4. Under the General Tab, you should be able to see the “Device Status”. It may say:

  • The drivers for this device are not installed (Code 28)
  • This device cannot start (Code 10)

5. Insert your installation or driver backup CD

(CD Missing or Outdated? Consider using Automatic Driver Update and Registry Repair Tool to fix all registry issues and keep all drivers up to date).

Run Free Registry and Driver Update Scan (Spare yourself from tedious, time-consuming work)

Click to HERE to learn more about this product.

Return to Unknown Device Homepage.