Resetting BIOS to default settings is done through a built-in option, usually labeled “Load Optimized Defaults” or “Load Setup Defaults,” accessible from within the BIOS interface itself. If you can’t access BIOS at all, clearing CMOS physically achieves the same result by resetting the stored configuration entirely.
- Most BIOS interfaces include a one-click “Load Optimized Defaults” option.
- This resets overclocks, boot order, and other custom settings to factory values.
- If BIOS is inaccessible, clearing CMOS physically achieves the same reset.
- A reset doesn’t affect anything stored on your drives or installed software.
Method 1: Reset From Within BIOS
- Enter BIOS, following how to enter BIOS on any PC.
- Look for an option labeled “Load Optimized Defaults,” “Load Setup Defaults,” or similar, usually accessible via a function key shown at the bottom of the screen or in an Exit menu.
- Confirm the reset when prompted, then save and exit to apply the changes.
Method 2: Clear CMOS Physically
If BIOS is inaccessible, perhaps due to a bad overclock preventing boot, clearing CMOS resets the stored BIOS configuration to default at the hardware level, following the process detailed in CMOS battery. This typically involves removing the battery briefly or using a dedicated clear CMOS jumper or button.
When You’d Want to Reset BIOS
- After a failed or unstable overclock, following how to overclock a CPU, that’s causing boot issues
- Troubleshooting a system that’s become unstable after various setting changes over time
- Preparing a system for resale or handing off to someone else
- After a BIOS update, since some settings may need to be reconfigured or reset anyway
What a Reset Does and Doesn’t Affect
Resetting BIOS reverts settings like boot order, overclocking configurations, and enabled/disabled features back to factory defaults. It does not affect anything stored on your drives, including Windows, installed programs, or personal files, since BIOS settings are entirely separate from drive contents.
Will XMP or Overclocks Be Disabled?
Yes, resetting to defaults disables XMP, following XMP, and any manual overclocking settings, reverting RAM and CPU to stock speeds until you manually re-enable these settings afterward.
Reconfiguring After a Reset
After resetting, re-enable XMP if you want your RAM running at its rated speed, and adjust boot order if you have specific preferences, since these settings revert to conservative factory defaults that don’t reflect your typical usage.
Tip: take note of any custom settings you rely on, like XMP or specific fan curves, before resetting, so you can quickly restore them afterward rather than reconfiguring from memory.
See also CMOS battery guidance, community troubleshooting on r/buildapc, BIOS reset guides from Tom’s Hardware, and safety notes from iFixit.
Frequently Asked Questions
Does resetting BIOS delete my files?
No, BIOS settings are entirely separate from your drives, so resetting has no effect on Windows, programs, or personal files.
What’s the easiest way to reset BIOS to default?
Use the “Load Optimized Defaults” option found within the BIOS interface itself, accessible via a function key or Exit menu.
What if I can’t access BIOS to reset it?
Clear CMOS physically, either by removing the battery briefly or using a dedicated clear CMOS jumper or button on your motherboard.
Will XMP need to be re-enabled after a reset?
Yes, resetting to defaults disables XMP and any manual overclocking, requiring manual re-enabling afterward.
