It is because it has been set to run at the lowest possible graphics settings and the minimum resolution supported by Windows.
While in Safe Mode, you might feel that your screen looks wonky and different than it usually does. You do not have access to anything but the core programs and functions of Windows, which do not include the drivers for your networking devices - meaning you usually cannot access the internet while in the standard Safe Mode. When told to enter Safe Mode, Windows only loads the barest essentials needed to function (a minimal set of drivers and services).
Enable the standard Windows 7 boot in the Command PromptĪt the next restart of Windows 7, you get the full operating system.