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To reset your computer's BIOS, follow these steps to restore the system to its factory settings. This operation is useful after purchasing a second-hand PC, after system modifications, in case of power failure, when installing new hardware, or before selling your PC.
Automatic BIOS Reset
1. Access the BIOS:
- Turn on your computer and press the "SETUP" key during startup. Depending on the brand, this may be the F2 or F10 key. The appropriate key is often indicated on the screen during startup.
- Refer to your PC's manual or contact the manufacturer for more details if necessary.
2. Navigate through the BIOS menu:
- Use the arrow keys to navigate.
- Look for an option like "Default Setup", "Load Default Setup", or "Restore Default Settings".
- Select this option and confirm with ENTER.
3. Confirm the reset:
- The system will load the factory settings and confirm the operation.
- The BIOS reset will be done automatically.
Manual BIOS Reset
If you cannot access the BIOS, a manual reset might be necessary, called "Clear CMOS".
Preparation:
1. Turn off and unplug the computer:
- Ensure the computer is turned off and disconnected from any power source.
- Remove the battery if possible for a laptop.
2. Safety:
- Discharge yourself electrically by touching a metal surface to avoid damaging internal components.
Method 1: Remove the CMOS Battery
1. Open the computer:
- Access the motherboard and locate the CMOS battery, often a button cell.
2. Remove and reinstall the battery:
- Remove the battery and press the power button for 15 seconds to discharge any residual energy.
- Reinstall the battery.
Method 2: Use the CMOS Jumper
1. Move the jumper:
- Locate the CMOS jumper on the motherboard. Move it from the standard position to the "clear" position.
2. Discharge residual energy:
- Press the power button for 15 seconds.
3. Reposition the jumper:
- Return the jumper to its original position.
Precautions and Tips
Allow enough time for the reset.
- BIOS Access: Ensure you can access the BIOS to change settings if necessary.
- Data Backup: Back up your important data before resetting.
- BIOS Update: If problems persist with newly installed hardware, consider updating the BIOS.
- Device with internet access: Have a device with internet access on hand to look up solutions in case of complications.
The BIOS performs a self-test at each restart. Pay attention to the beeps emitted, which may indicate errors requiring a BIOS reset.
By following these steps, you can reset your BIOS and restore your PC to its factory state.