first the booting files are loaded in the RAM and these files are in the boot sector where operating system is installed . after loading these file then these files load the operating system in the RAM , some portion of RAM is Allocated by the OS.
after that window is ready to perform tasks.
A computer is loading data when it is turned on and the operating system is being loaded.
booting
Booting up ..! A boot process is a step by step process with which a computer loads the operating system.
Generally it's called "booting up" the system
windows xp
A computer without an operating system will not operate.
The computer is running on the Windows operating system.
I'm pretty sure that's the POST or the Power On Self Test.
Safe-mode is an option for operating systems whereby many of the extra features are turned off so that one can investigate a problem. Therefore and operating system is required
operating system decide what your computer will do
An operating system manages the working operation of a computer
operating system is a complete operating system that works on a desktop computer, a notebook computer, or mobile computing device.