Before the problem that the BIOS can't get in, Xiaou first talked about what the BIOS is, and swept the literacy to netizens who have no experience in installation.
BIOS overview :The basic output of the system is input to the system, and it will automatically check the software and hardware when booting. We need to change the boot required (such as UEFI, legacy), change the hard disk mode (AHCI and IDE), and start and start. Disabling many system critical configuration issues and other issues need to enter the BIOS debugging, although the BIOS has the same anti-strike capability of Transformers, but the BIOS is damaged or a problem is also very difficult.
This netizen's computer is the Lenovo ThinkPad E420, how to enter the BIOS? There are two ways for Lenovo's notebook to enter bios. One is the F1 entry of the old model, and the other is the F2 or FN+F2 of the new model. This article mainly introduces the bios settings of the old model, and the new model will follow. In the follow-up, Lenovo's quick selection of the u-disk start shortcut button has not changed, it is still F12, maybe the new model is FN+F12, this time we are talking about the new model, so press F2 when booting.
Then in the BIOS to modify the hard disk's parameter settings, then F10 save settings to enter, restart the self-test, heard a harsh alarm, can not start properly, then immediately turn off the computer, short jumper to clear CMOS, then jump The line is set to the default power-on state. At this time, it still cannot be started, and the CPU fan blade does not turn. At this point, the problem was analyzed and it was concluded that there was a quality problem with the power connection or the patch cord socket, so the CMOS could not be cleared. This is a replacement socket, re-inserted, you can solve.
The BIOS is the primary information read location when the computer is booted. More precisely, CMOS is the primary information read location when the computer is booted, and the BIOS is the setup program on CMOS. CMOS is the memory chip that stores BIOS setup information. Therefore, the BIOS reset to factory settings can solve the problem that many computers cannot be started normally. Many friends are after the computer failure, some experts will teach them to restore the factory settings of the BIOS, but why the specific error of the BIOS reset factory settings, but it is not clear, resulting in similar or different next time When you have a problem, you need to ask a lot of people. The following is a small series of System City to analyze with you all of them will need to perform BIOS reset factory settings!
Case 1:
The computer loaded new hardware that is incompatible and unusable, causing the computer to fail to boot properly. In this case, the BIOS restores the factory settings to play the role of clearing the new hardware that cannot be used.
Case 2:
The computer is not working properly due to a change in BIOS overclocking;
Case 3:
The wrong BIOS settings were made so that the computer could not be used normally;
Situation 4:
Need to replace the CPU, and at the same time, you have changed the BIOS overclocking or locked the CPU voltage, you have to restore the factory settings to be safe, otherwise the voltage is not suitable for the replacement of the CPU voltage will destroy the new CPU. The best insurance method is to restore the factory settings to the BIOS and then put the new CPU on.
The above is the general need to perform BIOS reset factory settings. I hope that I can help you, and more exciting content is welcome to continue to visit System City!
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