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Answer :
The correct boot sequence for a PC typically follows the order of POST (Power-On Self-Test), power good, CPU, boot loader, and operating system.
Let's break down each step:
1. POST (Power-On Self-Test): When you turn on your PC, the first thing it does is perform a self-test to check if all the hardware components are functioning correctly. This includes checking the CPU, memory, and other peripherals. If any issues are detected during the POST, an error message or a series of beeps may be displayed.
2. Power good: Once the POST is completed and all the hardware is confirmed to be working properly, the power good signal is sent. This signal indicates that the power supply is providing stable and adequate power to the system.
3. CPU: After the power good signal is received, the CPU (Central Processing Unit) takes over. It is responsible for executing instructions and performing calculations. The CPU initializes itself and prepares for the next step.
4. Boot loader: The boot loader is a small program that resides in the computer's memory and is responsible for loading the operating system into memory. It typically presents the user with a menu of available operating systems (if there are multiple installed) and allows them to select which one to boot into.
5. Operating system: Once the boot loader has loaded the operating system into memory, the operating system takes control. It initializes all the necessary drivers and services, allowing the user to interact with the computer through a graphical user interface or command line.
It's important to note that the boot sequence may vary slightly depending on the specific computer hardware and software configuration. However, in most cases, the sequence described above is followed.
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