What is the procedure to turn on a computer?

Answer 1

First, make sure the computer has a "power cord" that connects from the computer to the electric supply. This should be plugged into an appropriate wall outlet. On today's tower casings the ON button is usually placed on the front face of the computer. If you cannot tell which is the ON button, refer to the owners manual for specific instruction. If this fails, unplug the computer, place it back into the box, take it back to the dealer you bought it from, and give up on the idea of ever being able to operate a computer.
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Press the "on" button and voila!

Answer 2

Turning on your computer is known as a cold boot. A warm boot is when you restart the machine without interrupting the power supply.

The term boot comes from the term bootstrap, as in the phrase to pull oneself up by one's bootstraps. That is, in order to load software (e.g., an operating system), some software must be loaded. This paradox was eventually solved by the introduction of a ROM chip, which allowed a simple program to be "hard-wired" and run automatically, without needing to be loaded. Nowadays we use EPROM chips which can be reprogrammed (or flashed), to cater for new features.

The simple program is known as the BIOS, the basic input and output system. It has several functions, some of which can be user-defined. This is made possible by the CMOS (complementary metal-oxide semiconductor), a volatile type of RAM that uses a small rechargeable accumulator (a battery) to maintain its state while power is off. Thus when you edit the BIOS settings you're actually editing the variables stored in the CMOS. The accumulator is also used to maintain the RTC (real-time clock) while power is off.

The basic function of the BIOS is to load an operating system. However it also performs a series of quick tests to ensure all essential hardware is functional. this is known as a POST (power-on self-test). If this fails, you need to enter the BIOS and adjust the settings (a common problem when the accumulator fails), or replace a faulty component (such as the CPU itself, the RAM chips or the hard-drive controller).

When the POST is complete, the boot-loader takes over. This program's only responsibility is to locate another program in the boot sector (track 0) on a hard-disk, CD-ROM, DVD or similar device (usually dependent upon a user-defined boot order sequence defined in the CMOS). Having located a boot sector, the data is loaded and control passed to it. This then locates the operating system loader, loads it and passes control to it. The operating system loader may be a boot menu (from which an operating system may be selected from a list) or it may continue loading a default operating system. Either way, the operating system's loader takes over and completes the remainder of the boot process. In other words, the BIOS starts a chain of events such that a simple program loads a more complex program, which loads an even more complex program, and so on until the operating system is fully loaded and control is finally given to the user.

Since 2011 the BIOS has been replaced with UEFI (universal extensible firmware interface), however the term BIOS is still used as the primary function is still the same; booting the system. Firmware is just another word for software that's specifically written upon a non-volatile chip such as ROM, and that's what the BIOS is. Extensibility is the only real difference. For instance, EFI is a lot more flexible, modular and CPU-independent, and overcomes the 2TB drive limit that is inherent with traditional BIOS.

Answer 3

on your computer