The settings of the basic equipment and the time of your computer are stored in the BIOS, and if for some reason you have problems after installing new devices, you forgot the password or just configured something wrong, you may need to reset the BIOS to the default settings.
In this instruction, I will show examples of how you can reset the BIOS on a computer or laptop in cases where you can get into the settings and in the situation when it does not work (for example, a password is set). Examples will also be provided for resetting UEFI.
Reset BIOS in the settings menu
The first and easiest way is to go into the BIOS and reset the settings from the menu: in any version of the interface, such an item is available. I will show you several options for the location of this item, so that it is clear where to look.
In order to enter BIOS, you usually need to press the Del key (on the computer) or F2 (on the laptop) immediately after switching on. However, there are other options. For example, in Windows 8.1 with UEFI, you can get into the settings using additional boot options. ( How to enter the BIOS of Windows 8 and 8.1 ).
In older versions of BIOS, on the main settings page there may be items:
- Load Optimized Defaults - reset to optimized
- Load Fail-Safe Defaults - Reset to default settings, optimized to reduce the likelihood of failures.
On most laptops, you can reset BIOS settings on the Exit tab by selecting Load Setup Defaults.
On UEFI, everything is about the same: in my case, the Load Defaults item (the default settings) is located in the Save and Exit item.
Thus, regardless of which version of the BIOS or UEFI interface you have on your computer, you should find the item that serves to set the default parameters; it is called the same everywhere.
Reset BIOS settings using a jumper on the motherboard
Most motherboards are equipped with a jumper (otherwise - a jumper), which allows you to reset the CMOS memory (namely, all BIOS settings are stored there). You can get an idea of what a jumper is from the picture above - when the contacts are closed in a certain way, certain parameters of the motherboard work, in our case it will reset the BIOS settings.
So, to reset you will need to follow these steps:
- Turn off the computer and power (switch on the power supply).
- Open the computer case and find the jumper responsible for resetting CMOS, usually it is located near the battery and has a signature like CMOS RESET, BIOS RESET (or abbreviations for these words). Three or two contacts can respond to a reset.
- If there are three contacts, then move the jumper to the second position, if only two, then borrow a jumper from another place on the motherboard (do not forget where it came from) and install on these contacts.
- Press and hold the computer's power button for 10 seconds (it will not turn on, since the power supply is turned off).
- Return the jumpers to their original state, reassemble the computer and turn on the power supply.
This completes the BIOS reset, you can set them again or use the default settings.
The memory in which BIOS settings are stored, as well as the motherboard clock are not non-volatile: the board has a battery. Removing this battery leads to the fact that the CMOS memory (including the BIOS password) and the clock are reset (although sometimes it takes a few minutes to wait before this happens).
Note: sometimes there are motherboards on which the battery is not removable, be careful not to use excessive force.
Accordingly, in order to reset the BIOS of a computer or laptop, you will need to open it, see the battery, remove it, wait a bit and put it back. As a rule, to remove it, it is enough to press on the latch, and in order to put it back - just slightly press down until the battery itself snaps into place.