How do I reset my Dell OptiPlex BIOS?
John Castro
Published Feb 16, 2026
How do I reset my Dell OptiPlex BIOS?
Consumer and Client Products (Alienware, Inspiron, Latitude, Precision, OptiPlex, Vostro, XPS)
- Restart or power on the computer.
- When you see the Dell logo during POST, press the F2 key once a second to enter the System Setup. NOTE: When the computer boots into Windows. Restart the computer and try again.
How do I completely reset my BIOS?
Reset the BIOS to Default Settings (BIOS)
- Access the BIOS Setup utility. See Accessing BIOS.
- Press the F9 key to automatically load the factory default settings.
- Confirm the changes by highlighting OK, then press Enter.
- To save the changes and exit the BIOS Setup utility, press the F10 key.
How do I get into the BIOS on a Dell OptiPlex 745?
Entering System Setup
- Turn on (or restart) your computer.
- When the blue DELL™ logo appears, press immediately.
How do I reset BIOS without BIOS?
Easy way to do this, which will work regardless of what motherboard you have, flip the switch on your power supply to off(0) and remove the silver button battery on the motherboard for 30 seconds, put it back in, turn the power supply back on, and boot up, it should reset you to factory defaults.
How do I factory reset my Dell Optiplex?
Restore your Dell computer using Windows Push-Button Reset
- Click Start.
- Select Reset this PC (System Setting).
- Under Reset this PC, select Get Started.
- Select the option to Remove everything.
- If you are keeping this computer, select Just remove my files.
- Follow the on-screen instructions to complete the reset process.
How do I restore my Dell BIOS to factory settings?
Turn on the computer. Tap the F2 key several times until Entering Setup appears. Reset the BIOS to factory defaults….The method to reset the BIOS varies between different computers:
- Click the Load defaults button.
- Or, press the F9 key to load default settings.
- Or, press the Alt + F key to load default settings.
How do I reset my Dell laptop to BIOS?
How do I factory reset my computer with command prompt?
Method 1: Perform Windows 10 reset from command line step by step
- Open an elevated command prompt.
- From the command prompt window, type “systemreset –factoryreset ” (without quotes).
- Then, select “Keep My Files” or “Remove Everything” to reset your PC, depending on if you want to keep your personal files.
Does resetting the BIOS erase data?
Resetting the BIOS does not touch data on your hard drive. A bios reset will restore the bios to the factory-enabled settings. It will not erase “data” (as in: information on your disk), but it can change things that you might have altered in your bios settings.
How do I hard reset my Dell?
How do I fix BIOS not booting?
How To Fix PC Not Booting To BIOS
- Fix Faulty Power Connector.
- Troubleshoot The RAM Sticks.
- Remove The BIOS Battery To Reset The CMOS.
- Disconnect External Peripherals.
- Read The BIOS Error Messages.
- Fix Possible Boot Device Issues.
- Update The BIOS.
- Use Windows Safe Mode.