As you already know, bios is the main microcircuit of a computer. It is embedded in the PC motherboard and is the main software and hardware link between the user and the operating system. The main tasks of the chip are device testing and transfer of control to the operating system. And now you will learn how to reset the BIOS to the default settings, and why you need it.
Why resetting the hardware of an I / O chip is important
Often, a computer starts to malfunction only because the BIOS is incorrectly configured. Sometimes users forget the password to enter the main settings of the chip. For all these situations, the only right decision will be to figure out how to reset the BIOS to factory defaults. Another name for this procedure is resetting to default settings or resetting Cmos.
Reset BIOS settings. Options
The first way to reset the settings is to call the standard chip utility ( BIOS SETUP) . Next, we look into the interface of this utility and look for the “Load default setting” or “Load BIOS Setup Defaults” parameter there. If you find something similar, select the item found and press the Enter key.
This is one of the ways to reset the BIOS to factory settings. Unfortunately, situations arise when the computer does not load at all, you can see only the “frozen” black screen, and sometimes it is not even visible - the computer stops loading.
Such cases may occur as a result of spontaneous changes to BIOS SETUP settings , for example, during overclocking (increasing the processor operating frequency).
Based on this, there is only one thing left: open the system unit and reset the base chip settings on the motherboard itself. How to reset bios in hardware? To do this, next to the battery, the same one from which the clock works, the calendar, as well as the factory BIOS settings , there is usually a special switch (jumper). To get to it, you need to do the following:
- Disconnect all power cables from the PC.
- Using a screwdriver, unscrew the side cover located further from the power supply.
- Find on the motherboard a socket with a battery that looks like a big silver coin. Near it should be a jumper in the stuck position.
Just in case, next to him write the designation "Clear Cmos" (CCMOS, CLRTC) or something similar.
The jumper is shorted to a three-pin pin. Pins 1-2 serve for
circuit short circuit in the motherboard. Pins 2-3 allow you to reset the bios to
primary settings. It is on them that the jumper closes for about 3-5 seconds.
If there are no such pins on the board, but there are hollow sealed pads,
then, to reset the settings, you need to close them with a metal object.
If there is no means at all in the PC hardware to reset the BIOS,
just remove the battery from the socket for a while, this is done to discharge the capacitors on the motherboard. Then the settings stored in Cmos will be reset to zero .
Also, the settings should be standardized if you updated the software.
providing bios. Modern microcircuits allow you to do so
called flashing, so each modification of the BIOS SETUP utility must be accompanied by a reset procedure.
Another way to reset cmos (memory chip for profile storage
BIOS) is the holding of the Insert key, pressed when the computer is turned on, together with the F2 or Delete key. This combination allows some motherboards to achieve similar results.
Finally, I would like to mention very rare cases. The fact is that on some PCs, zeroing is possible only within a day after removing the battery. Therefore, in order not to panic in an emergency, it is better to read the documentation on the computer system board in advance and find out a way to reset the BIOS in your case.