How to disable the "Test mode" message in Windows 8.1?

When you start your Windows 7, Windows 8 or Windows 8.1 computer, you receive the following message in the lower-right corner of the desktop, depending on your version of Windows.

Windows 8.1:
Test Mode Windows 8.1 Pro Build 9600

Windows 8:
Test Mode Windows 8 Pro Build 9200

Windows 7:
Test mode Windows 7 build 7600

Note: This message may also mention a more specific edition of Windows. For example, the message may be, "Test mode Windows 8.1 build 9490".

These messages is displayed because your computer is running in test mode. In addition, test signing mode may start if an installed program is in a test phase because it uses drivers that are not digitally signed by Microsoft.

Windows 8/8.1
To fix this problem manually in Windows 8, follow these steps:

1. Swipe in from the right, click or tap Search, and then type cmd. Alternatively, type cmd on the Start screen.

2. Tap-and-hold or right-click Command Prompt in the search results. Select Run as administrator on the menu that appears at the bottom of the screen. (If you are prompted by a User Account Control window, tap or click Yes.)

3. In the Command Prompt window, type the following command, and then press Enter:

bcdedit -set TESTSIGNING OFF

4. After you see "The operation completed successfully" message, close the Command Prompt window.

5. Restart the computer, after the restart, Test mode watermark is gone .

Windows 7
To fix this problem manually in Windows 7, try these methods, in the given order.

Method 1:
1. Click Start, and then type cmd in the Search box.
2. Under Programs, right-click cmd.exe, and then click Run as administrator.
2. At the command prompt, type the following text, and then press Enter:

bcdedit /set TESTSIGNING OFF

4. After you see "The command completed successfully" message, close the Command Prompt window.

5. Restart the computer, after the restart, Test mode watermark is gone .

Note If this method does not resolve the issue, go to Method 2.

Method 2:
1. Click Start, and then type cmd in the Search box.
2. Under Programs, right-click cmd.exe, and then click Run as administrator.
3. At the command prompt, type the following commands, and press Enter after each command:

bcdedit.exe -set loadoptions ENABLE_INTEGRITY_CHECKSbcdedit.exe -set TESTSIGNING OFF

4. After you see "The command completed successfully" message, close the Command Prompt window.

5. Restart the computer, after the restart, Test mode watermark is gone.

Source
Microsoft