The “No Bootable Devices Found” error on a Dell computer usually indicates a problem. Your system can’t locate an operating system to boot from. Here are steps to troubleshoot and resolve this issue:
1. Check Boot Order in BIOS
The boot sequence might not be correctly set.
- Access BIOS:
Turn on your computer. Press F2 repeatedly to enter the BIOS setup. You need to press Del instead, depending on the model. - Check Boot Options:
Confirm the primary hard drive is set as the first boot device. Alternatively, check for the correct bootable device. - Save and Exit:
Save changes and restart.
2. Check Connections (For Desktop PCs)
Make sure the hardware is properly connected:
- Turn off the computer and disconnect all power sources.
- Open the case and check the SATA/IDE cables connecting your hard drive to the motherboard.
- Reseat or replace cables if needed.
3. Run Dell Diagnostics
Dell computers have built-in diagnostics to identify hardware issues:
- Restart and press F12 to access the boot menu.
- Select Diagnostics and let it check for hard drive or other hardware issues.
4. Enable Legacy Boot Mode
If your computer uses UEFI mode but the operating system requires Legacy Boot:
- Enter BIOS (press F2 at startup).
- Find Boot Mode under Boot Options.
- Change from UEFI to Legacy and save the settings.
5. Ensure the Drive is Detected
If the hard drive isn’t detected in BIOS, it could indicate a hardware issue:
- Verify the drive appears in the BIOS under Storage Information.
- If the drive isn’t listed, it may have failed or needs reseating.
6. Repair Bootloader
The bootloader may be corrupted, especially after a power failure or OS update:
- Boot from a Windows installation media (USB/DVD).
- Select Repair your computer > Troubleshoot > Command Prompt.
- Use these commands:
- Restart the computer after running the commands.
- Restart the computer after running the commands.
7. Check for Operating System Issues
- If the drive is detected but not bootable, the operating system might be missing or corrupted.
- Use installation media to reinstall or repair Windows.
8. Reset BIOS to Default Settings
- Enter BIOS (press F2).
- Look for an option to Restore Defaults.
- Save changes and restart.
9. Replace the Hard Drive (If Needed)
If diagnostics or troubleshooting reveal a failing hard drive:
- Replace the hard drive or SSD.
- Reinstall the operating system.
10. Seek Professional Help
If the problem persists, it might require advanced troubleshooting or hardware replacement. Contact Dell Support or a technician.
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