Many times Windows 7 suddenly starts showing Test mode watermark on Desktop. A message is shown at the bottom-right corner having following text:
Test Mode
Windows 7
Build 7600
If you are using Windows 7 SP1, you get Build 7601 displayed on screen:
Test Mode
Windows 7
Build 7601

Actually it happens when Windows 7 is running in Test mode. Microsoft has released a new Fixit to fix this problem.
SYMPTOM:
When you start your Windows 7 based computer, you receive the following message in the lower-right corner of the desktop:
Test Mode Windows 7 Build 7600
For Windows 7 SP1, you get following message:
Test Mode Windows 7 Build 7601
This message is displayed because your computer is running in test mode.
CAUSE:
The test mode watermark can appear if the test signing mode is started on the computer. This test mode may occur if an application whose drivers are not digitally signed by Microsoft is installed and still in the test phase. Microsoft added test mode to Windows so that users can test programs without having to provide an authentication certificate. The message that is mentioned in the "Symptoms" section is displayed in the lower-right corner of the desktop when the computer is running in test mode.
SOLUTION:
1. Click on "Start button -> All Programs -> Accessories". Right-click on "Command Prompt" and select "Run As Administrator". If you are prompted to enter password, enter the password and continue. You can also open Command Prompt in Administrator mode by typing "cmd" in Startmenu Search box and press "Ctrl+Shift+Enter".
2. Now provide following command:
bcdedit /set TESTSIGNING OFF
If the above command doesn't work, you can provide following commands:
bcdedit.exe -set loadoptions ENABLE_INTEGRITY_CHECKS
bcdedit.exe -set TESTSIGNING OFF
3. That's it. Close Command Prompt window and restart your system. It'll disable the watermark from Desktop.
AUTOMATED FIX:
If you don't want to fix the problem manually, you can download following Fixit released by Microsoft which will automatically fix the problem:
Download Fixit to Remove Test Mode Watermark from Windows 7 Desktop
This article was posted by VG in following section: Troubleshooting, Windows 7.
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M1cha
Is the ability to load unsigned drivers the only difference of the testmode to normal boot or are there any other things like security-problems?
VG
^^ No. Test mode was mainly created for using unsigned drivers for testing purposes.
Paras Sidhu
Very Nice. Was waiting for it. That text was annoying me very much. This fix works very well.
Thanks :)
Sean Landicho
Mine only shows Windows 7 Build 7601?
My OS is Windows 7 Ultimate