Are you seeking for a feasible way to completely get rid of and uninstall Compaq ATAPI/IDE Controller 2.21.1.0? If you're having some trouble doing that, here is the right place to help you thoroughly uninstall Compaq ATAPI/IDE Controller 2.21.1.0. If Compaq ATAPI/IDE Controller 2.21.1.0 is corrupted or damaged, the best way to get it work properly is to uninstall it and then reinstall it. But what can you do when you receive error messages during the uninstallation process or when you can't find it in your Programs and Features? Now, in order not to make your situation worse, please stop trying your own methods to uninstall Compaq ATAPI/IDE Controller 2.21.1.0, and follow the listed professional methods to remove Compaq ATAPI/IDE Controller 2.21.1.0.

Possible Error Caused by Incorrect Uninstall Methods

Error example

The above error messages are all caused by incomplete uninstallation of related programs. Incompletely uninstallation of a program will leave some invalid keys in the system registry, which will cause such error pop-ups when the system still executes them.

Automatically Uninstall Compaq ATAPI/IDE Controller 2.21.1.0 (Recommended):

This Automatic Uninstaller will completely scan through the whole registry and hard drive and detect all files and components that belong to Compaq ATAPI/IDE Controller 2.21.1.0. With this Automatic Uninstaller, uninstalling a program completely can be as easy as ABC for you in the future.

Manually Uninstall Compaq ATAPI/IDE Controller 2.21.1.0:

Step 1: End all processes that are related to Compaq ATAPI/IDE Controller 2.21.1.0

Step 2: Uninstall Compaq ATAPI/IDE Controller 2.21.1.0

Step 3: Delete invalid entries of Compaq ATAPI/IDE Controller 2.21.1.0 in the registry

Step 4: Delete leftovers of Compaq ATAPI/IDE Controller 2.21.1.0 in hard drive

Step 1: End all processes that are related to Compaq ATAPI/IDE Controller 2.21.1.0

Hold Ctrl, Shift and Esc keys on the keyboard to open Task Manager. Then click on the related process and click End Process (in Windows 7, Vista) or End Task (in Windows 8) button.

Step 2: Uninstall Compaq ATAPI/IDE Controller 2.21.1.0

You can uninstall Compaq ATAPI/IDE Controller 2.21.1.0 by any of the following uninstall methods:

Method 1: Uninstall Compaq ATAPI/IDE Controller 2.21.1.0 via Control Panel

1. Open Programs and Features.

In Windows 7 and Vista,

a. Click Start menu and click Control Panel

b. Select View by Category and click Uninstall a program

In Windows 8 or later,

Hover the cursor in the bottom-left corner of the screen, right-click on the Start button when a small image of the Start Screen appears and select Programs and Features

2. Click on Compaq ATAPI/IDE Controller 2.21.1.0 and click Uninstall to uninstall it from your computer.

Method 2: Reinstall to Uninstall Compaq ATAPI/IDE Controller 2.21.1.0

If some of program files that are needed to uninstall Compaq ATAPI/IDE Controller 2.21.1.0 are missing or corrupted, you may fail to uninstall it. Believe it or not, reinstalling Compaq ATAPI/IDE Controller 2.21.1.0 may do the trick. If you still keep the original disk or the download file of Compaq ATAPI/IDE Controller 2.21.1.0, you can try that to repair the program. After repairing the program, you can try to uninstall it again.

Method 3: Uninstall Compaq ATAPI/IDE Controller 2.21.1.0 using its Uninstall.exe

If you cannot find Compaq ATAPI/IDE Controller 2.21.1.0 in Programs and Features, then you may be able to uninstall it thru its uninstall.exe.

a. For 32-bit Windows 7, Vista, 8 or later, open the C:\Program Files folder, open the program's folder (ex: WinRAR), and go to step 3 below.

b. For 64-bit Windows 7, Vista, 8 or later, open either the C:\Program Files folder for an installed 64-bit program or C:\Program Files (x86) folder for a installed 32-bit program, and open the program's folder (ex: WinRAR).

Method 4: Uninstall Compaq ATAPI/IDE Controller 2.21.1.0 via Windows Registry

1. Open regedit. To do so, press Windows and R keys, type in regedit and hit Enter.

2. Navigate to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

3. Find the program you want to uninstall, search for a string value called UninstallString in the right panel.

4. Double-click on it and copy its value.

5. Press Windows and R keys, type in cmd to open command prompt.

6. Right click, paste the value and hit Enter key. After that, the program will begin to uninstall. Click Yes when it asks for your confirmation.

Note: If you have a 64-bit Windows system, you may need to navigate to the following key to look for 32-bit programs:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall

Step 3: Delete invalid entries of Compaq ATAPI/IDE Controller 2.21.1.0 in the registry

Video Guide: How to back up and edit the registry

Note: It's very important for you to know that the registry is one of the most important part of the Windows system, you should be extremely careful when deleting any keys in the registry. Any small mistake can result in severe problems or even system crash. So removing Compaq ATAPI/IDE Controller 2.21.1.0 by editing the registry is only recommended to computer users with certain computer knowledge. If you don't want to take the risk to damage your computer system, it's recomended that you use this Automatic Registry Cleaner to clean invalid keys.

Step 4: End all processes that are related to Compaq ATAPI/IDE Controller 2.21.1.0

Even you uninstall Compaq ATAPI/IDE Controller 2.21.1.0 in Control Panel and remove invalid keys in the registry, there are still some folders left in hard drive. To completely remove Compaq ATAPI/IDE Controller 2.21.1.0 from your system, you can go to the following locations to delete the folders of Compaq ATAPI/IDE Controller 2.21.1.0.

C:\Program Files (x86)
C:\Program Files
C:\ProgramData
C:\Users\Default\AppData\Local
C:\Users\Default\AppData\Roaming

Uninstall Compaq ATAPI/IDE Controller 2.21.1.0 via Automatic Uninstaller

Not every program can be easily uninstalled by the above manual uninstall methods, as not everyone of us are good at computers and manually editing computer settings. We may fail to uninstall a program successfully due to various reasons, such as missing necessary files, strange error messages, and no permission to uninstall the program. At this time, a professional third-party uninstaller will be very handy to help us easily and completely get rid of any unwanted program off our computer system. With only a few clicks, this powerful third-party uninstaller can automatically scan and identify all files and components related to Compaq ATAPI/IDE Controller 2.21.1.0 and then completely remove Compaq ATAPI/IDE Controller 2.21.1.0. Click and download this professional Automatic Uninstaller below to uninstall your program now.