By default, a standard user can log on to a Windows 7 and Windows Server 2008 R2-based computer by using safe mode startup options, such as safe mode with networking option. However, some system protections are bypassed when system is running in safe mode. Microsoft offers a hotfix for Windows 7 and R2, that lets administrators block standard users from logging on in safe mode, safe mode with networking, or safe mode with command prompt. “To apply this hotfix, you must create a registry entry after you install hotfix, using these steps: Click Start, click Run, type regedit, and then press ENTER. Locate and then click following registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System. On the Edit menu, point to New, and then click DWORD (32-bit) Value. Type SafeModeBlockNonAdmins , and then press ENTER. Right-click SafeModeBlockNonAdmins, and then click Modify. In Value data box, type 1, and then click OK . If you set this value to 0, system doesn’t block non-administrator users. Exit Registry Editor,” Microsoft explained.