How to fix “Test mode Windows 7 build 7600” message displayed in Windows 7

Microsoft KB2509241 explains Windows Test Mode a little more, and what causes it, but if you’re seeing it and don’t know why, here’s the easy way to fix it:

Open an administrator-level command prompt and type the following commands:

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

That’s all.