Most of us, using computers or laptops, do not think about how these electronic devices work. The developers of modern software have created operating systems with a user-friendly interface. But sometimes there are times when the most incompetent user has to deal with concepts such as reinstalling the "OS" or setting up the system. The basis for connecting all elements of a computer and controlling its operation is the BIOS. He is responsible for everything from the temperature of the processor and the correct loading of the OS to the maintenance of programs when accessing the hard drive and random access memory. At the slightest failure, the BIOS will identify the problem and make it possible to fix it. Therefore, without his "consent" to make any changes to the computer will not work.
Primary bootloader
Translated from English, the acronym BIOS stands for "basic input-output system." This is a set of microprograms that monitor the operation of the processor, video adapter, RAM, hard disk and connected devices.
For the first time, it was used by IBM experts and was named the primary loader. Its main functions are testing and setting up equipment, as well as loading the operating system. Given that the BIOS is responsible for the initial loading, all its program elements should be available immediately after turning on the power, therefore they are not stored on the hard drive, but are written to the memory of one of the microchips located on the motherboard. This microcircuit even has its own constant power supply from a 5V cell, also located on the motherboard.
BIOS views
BIOS in a laptop is no different from a computer. Today, there are three main types of bootloaders:
The first two are no different, except for the type of menu, they have an exclusively English interface and key management. They are used on almost all brands of computers and laptops. UEFI is a completely new kind of BIOS, with a graphical shell, as well as the ability to control with the "mouse". Used since 2011 only in the latest models of computers and laptops. More experienced users know that entering the bootloader on a personal computer is easy, just after turning on the power, press the F1 or F2 keys, like on a Lenovo laptop. Logging into BIOS on laptops from other manufacturers is also easy, but without the manual in hand, you will need the model name and modifications.
Considering that the electronics market today is flooded with Chinese laptops of various brands, the algorithms for their initial loading are different. Logging into Lenovo BIOS, for example, is fundamentally different from this procedure on Toshiba or Asus, which uses the F12, Dellete, or Esc keys.
How to enter BIOS on a Lenovo laptop?
Laptops of this brand have gained wide popularity in our country. Reasonable price and reliability made them indispensable for both work and entertainment. Of course, sometimes you have to make the necessary settings or reinstall the operating system. But far from everyone knows how to enter BIOS on a Lenovo laptop. This is due to the variety of models, most of which, like the G500, G505, G510, B590 and V580c, allow you to enter the recovery environment or BIOS by pressing the F1 or F2 keys. On some models released before 2010, you need to combine several buttons, for example Ctrl + Alt + Ins.
If you press and hold F12 during system startup, the Quick Boot menu (BIOS sub-section) appears, allowing you to set the boot order and select the appropriate resource for it (HDD, CD-rom or USB).
What should not be done on your own?
Now that you know how to enter BIOS on a Lenovo laptop before making any changes, it will not be superfluous to find out a few rules so as not to disable it:
- You can not connect the power to the laptop and turn it off while in the BIOS.
- You should not experiment with changing the installed settings, in particular, independently overclock the processor or video card. Such an operation will cause damage to the devices at the slightest error.
- It is not recommended to change the system date. This will lead to a conflict with the operating system.
Having basic knowledge of using computer programs and following these simple rules, you can configure your laptop yourself without any problems.