And there is usually a simple description of the error you meet.
Here, Ill mainly introduce error code 21 (Windows is removing this machine) and its fixes.
Youd better go to thehome pageand pick out a tool to protect your equipment.

You connected a hardware gadget to the computer, only to find it cant be used successfully.
What a terrible experience, right?
There are many reasons causing this problem.

The easiest way to know more details about it is going to check the gear Manager.
The system saysWindows is removing this equipment.
How To Repair Corrupted Or Missing System Files On Windows 10?

When this rig Manager error occurs on your gear, how can you fix it?
In the following content, I will show you how.
After that, you gotta find F5 button on your keyboard and press it to do a refresh.

This is the most direct and easiest way to update the view of Windows equipment Manager.
Some users said their problem just go away after doing this.
Temporary glitches may be the reason why Windows is uninstalling this equipment.

(Code 21) appears and a reboot of system may solve it.
Just select theWindowsbutton, choosePoweroption, and selectRestartfrom the menu.
How to troubleshootoperating system not foundduring system startup.