owner of the computer does not know what a BIOS is like the captain of a modern ocean liner, which is not even aware of the existence of the engines and propeller.Managed a man the ship is able to continue its path only if there are no unforeseen circumstances, to whom he (together with the captain) is completely defenseless.
The fact that such a BIOS, can be read on many websites and forums in the Internet.But human psychology is such that one is rarely a desire to just read about the device or laptop computer.It works, and it is fine.However, when problems arise, to seek an answer to the question of what the BIOS, too late and not always possible, because sometimes even load the operating system fails.But everything is so simple ...
on the board of any computer system is always a special chip ROM-memory in which rewriting of data is possible only by special means - programmer, program Flash write.After supplying power to the circuit of the computer program recorded in the chip is activated and is preparing a major hardware component to further load the operating system.To use the motherboard BIOS enough (on which the chip, in fact, is located), a processor, memory, and power supply.But to enter the BIOS setup, you need more graphics card, monitor, and keyboard.
way, BIOS abbreviation of English origin and translates as basic input and output.Very often, these words mean different things, so it is always necessary to specify what it was about.So, talking about what a BIOS, it should be pointed out that, apart from the chips on the board, just as she is called firmware (POST), the firmware file (firmware), the interface to make corrective adjustments.
How this program works?Here the user turns the power trigger.All components, including memory, video card, keyboard, controller ports, etc. Are launching an internal self-test.If it is passed without errors, the bus exhibited code ready for use.After that (of a second) BIOS, "polls" the necessary registers, in the absence of problems, "looking", the user has not made any adjustments to the settings.If there is no change, then the default settings.Errors self-test at least one key component interrupts the algorithm and sends to the speaker (Speaker), "beep-beep" sound in order that you can identify the faulty component.Suppose that was accidentally touched the cord "monitor graphics card", because of which the latter is partially pulled out of the connector on the board, breaking electrical contact.Obviously, in this state, it does not work, so no self-test runs.Consequence - the BIOS stops booting the system, signaling the user of the malfunction.
Besides testing the components of the BIOS configuration is performed by interrupts, channel DMA, address spaces.Knowing how to configure the BIOS, you can make changes in the work of many devices, "overclock" the processor to change the delay models of memory and so forth. To get to the settings, you need to immediately after the power supply is often to press «Delete».
BIOS version can be updated.To do so, download the new from the developer of the motherboard and reflash it.
