Windows 10: USBDeview Shows I Have A Video USB Device Connected But I Don't !

I use a program called USBDeview which lists all usb devices whether connected or not, sometimes I clear the list of all devices which I did today and then restarted my computer. With no USB devices connected, when restart was completed USBDeview showed the attached "Video Device" and the line underneath. I have never installed a video device of any kind on my computer and wondered if this is showing up on other peoples machines that use USBDeview.

:)

 

Windows 10 USB Device Limit?

Sounds like you've run into the longstanding Windows enumeration bug (since Vista) whereby if you plug/unplug multiple USB devices into different ports each time then eventually the registry hits an enumeration limit, hence the 'unknown device' message.

You can test for this easily (and fix it temporarily) by using Nir Sofer's small, free, portable USBDeview utility.

1. Download and unzip USBDeview. Make sure you choose the correct 'bitness' for your system (which is most likely using a 64-bit version of Windows).

2. Remove any devices plugged into the *front USB ports.

3. Right-click on the UsbDeview.exe file and select the Run as administrator... option. (This is important as USBDeview needs elevated rights to remove entries from the USB history list that shows device name/manufacturer/serial no./capability, etc. and - more importantly for your purposes - which port the device was connected to.)

4. Click on the word Connected at the top of its column. (This isn't strictly necessary but it sorts the list and makes it less likely that you'll accidentally disconnect any USB keyboard/mouse in use.)

5. Looking at the first column, click on the first device that shows with a grey roundel (a green roundel indicates a connected device.), hold the SHIFT key down then click on the last device that shows with a grey roundel. You have now selected all USB devices that are currently disconnected.

6. Select Uninstall Selected Devices from the File menu then click on the Yes button in the prompt that appears. You will be left with a list showing any remaining USB devices that are connected.





7. Close USBDeview and restart your PC. This will let Windows repopulate the USB and USBSTOR keys under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum used to store enumation info.

Report back whether this has fixed the issue you have been experiencing with USB devices showing as 'unknown device'.

Hope this helps...

* Note: You can remove any devices (except USB keyboard/mouse) from the rear USB ports as well... it clears the registry better of its USB enumeration history but it just takes longer for 'semi-permanent' devices to be enumerated the first time they are connected after the first reboot. Note also that if you subsequently connect a USB device to a different port then enumeration takes place again and Windows writes new enumeration details, even if the USB device has been connected before.

 

Windows 10 USB Device Limit?

Thanks for the suggestion, I tried the USBDeview application and removed all the grayed out devices and restarted my PC. Windows repopulated all the devices that were currently connected to my rear USB ports, I decided to plug in my USB flash drive and it still comes up as "unknown device".
I'm thinking of removing all my USB devices (the 3 5-bay enclosures and the UPS, and only have my usb mouse and keyboard plugged in and then remove all the "not connected" devices in the USBDeview application, would this be a bad idea to try?

 

Headphones Not Showing Up in Device Manager?

You would only probably see the USB connected portion of the Headset , and it may be under HID , not have a listing of it's own .

Use USBDeview to see what the system has attached via USB , and to uninstall items etc as needed... it's a great little Program

View any installed/connected USB device on your system