BIOS stands for Basic Input/Output System. It is a firmware program that is permanently stored on the motherboard's ROM chip. When a computer starts, it first loads the BIOS settings. If these settings are changed or configured incorrectly, the system may fail to boot. To resolve this issue, you can restore the BIOS to its default settings. After leaving the factory, the computer comes with initial BIOS configurations. The following steps will guide you through restoring the BIOS to its factory settings.
**Precautions:**1. Restoring the BIOS to default settings should be done carefully. If not done properly, it might prevent your computer from booting. Only do this if there’s an issue or if you don’t need to reinstall the operating system.
2. To avoid confusion later, it’s recommended to take a photo or video of your current BIOS settings before resetting. If something goes wrong after restoring, you can refer back to the original configuration to adjust it accordingly.
**How to Restore Default Settings / Reset Motherboard BIOS to Factory Settings – Tutorial** **Method One:**1. During startup, press keys such as Delete, F1, F2, F8, F9, F10, ESC, or Enter to enter the BIOS interface. The exact key may vary depending on the manufacturer.
2. Once in the BIOS, look for options like "Load Optimized Defaults" or "Load Setup Defaults." Press Enter, then select "Yes" or "OK." Some BIOS versions have shortcut keys at the bottom, such as F6 for "Load Optimized Defaults." Save the changes by pressing F10 or F4 and restart the system.
3. For UEFI-based systems, there are typically two types of default settings: UEFI and Legacy. For example, on Lenovo laptops, go to the "ExTI" section and choose "OS Optimized Defaults" if using Windows 8 or later. For older systems, set it to "Other OS" or "Disabled" for Legacy mode.
4. Navigate to "Load Default Settings" or press key 9 to confirm and load the default BIOS settings in Legacy mode.
5. Finally, press F10 or F4 (check the lower right corner for guidance), select "Yes," and restart the system.
1. For desktop computers, you can open the case, remove the CMOS battery (also known as the button battery) from the motherboard, wait for 15 seconds, and then reinsert it. This will reset the BIOS settings to their defaults.
2. Some motherboards also have a jumper that allows you to reset the BIOS. Locate the 2-3 pin jumper and short it using a small screwdriver or jumper cap.
These are the two main methods to restore the BIOS settings of your computer. If you need to reset the BIOS to its default configuration, follow these steps carefully.
**Does BIOS Affect the Operating System After Restoring Factory Settings?**The default BIOS settings are designed to meet the basic requirements of the computer, so restoring them usually won't affect normal operation. However, there are a few things to keep in mind:
If your CPU was overclocked, it will return to its default frequency after resetting the BIOS, but this won’t harm the system.
If your system runs Windows XP without AHCI drivers, the default hard disk mode may be set to AHCI, which could cause a blue screen. In this case, manually change the hard drive mode to IDE.
Other special settings, such as dual hard drive configurations, may also need to be adjusted after a BIOS reset.
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