Are you receiving following error message in your windows operating system when booting your PC?
This device manager error denotes that windows is in the process of removing the device and you need to wait until windows finished this task. Seems pretty easy but it is not such easy because this message gets stuck for an hour and after several reboots, you get the same problem.
When you uninstall the driver, update windows or install other third-party software, may damage some DLL file. This DLL file may be related to particular driver hence you are getting error code 21.
Method 1: Fix using Advanced System Repair Tool
As we know, that most prominent reason behind “Code 21” is corrupted, damaged or outdated device driver, so you need an Advanced System Repair Tool that easily fixes problems related to Device Manager. It also repairs missing or corrupted system files like DLL files, EXE files, sys files, OCX files, inf files etc. Most of the time “Code 21” error appears due to corrupted registry entries. Advanced System Repair Tool takes care of registry file too and fix error easily.
Method 2: Fix Corrupted Driver Problems
As you know that the core reason behind Windows is removing this device. (Code 21) is corrupted or damaged device driver. So, Uninstalling and Reinstalling Device Driver may fix your issue permanently. Just uninstall the driver from Device Manager and install the latest version of the compatible driver.
Method 3: Run Hardware and Devices Troubleshooter
Hardware Troubleshooter is an effective and easy way to fix any device related issues. Not only Windows is removing this device. (Code 21) but if you are getting some other error message that is associated with Device Manager, then running Hardware Troubleshooter may give you quick fix of this error.
Method 4: Update Driver Manually
Above error is associated with driver software, so it is the best idea to update the driver manually.
Method 5: Increase System Memory
You must analyze system memory to fix this problem. If your system is running out low memory issue then the mighty choice is installing additional RAM in your PC.
Method 6: Modify Registry File
Modifying registry file is not recommended because incorrect edit of registry file may harm your operating system badly. For added security, you must keep a backup of registry file before performing any operation on it.
In order to Fix Error Code 21 – Windows is removing this device from Windows 7, Windows 8, Windows 10 and Windows Vista, you need to apply some special techniques that are explained well in this article.