How to Fix “Reboot and Select Proper Boot Device” Error

Encountering the “Reboot and Select Proper Boot Device or Insert Boot Media in Selected Boot Device and Press a Key” error message can be frustrating. It indicates that your computer cannot find the operating system (OS) to boot from. This guide provides a step-by-step approach to diagnose and fix this common issue.

Understanding the Error

Before diving into solutions, it’s crucial to understand what this error means. Essentially, your computer’s BIOS/UEFI is failing to locate a bootable device. This could be due to several reasons, including:

  • Incorrect Boot Order: The BIOS/UEFI might be configured to boot from a device that doesn’t contain an operating system.
  • Corrupted Boot Files: The boot files on your hard drive or SSD could be damaged, preventing the OS from loading.
  • Hardware Issues: Problems with the hard drive, SSD, or connecting cables can prevent the system from recognizing the boot device.
  • BIOS/UEFI Problems: Outdated or corrupted BIOS/UEFI firmware might cause boot issues.
  • Loose Connections: Internal cables connecting the storage device to the motherboard might be loose.

Troubleshooting Steps

Here’s a structured approach to resolving the “Reboot and Select Proper Boot Device” error:

1. Check the Boot Order in BIOS/UEFI

The first step is to ensure that your computer is configured to boot from the correct device. This involves accessing the BIOS/UEFI settings.

  • Restart your computer.
  • Look for a message on the screen indicating which key to press to enter Setup. Common keys include Del, F2, F12, Esc, or another function key. The key varies depending on the motherboard manufacturer. Consult your motherboard manual if needed.
  • Navigate to the “Boot” or “Boot Order” section. The exact name may vary.
  • Ensure that your primary hard drive or SSD is listed as the first boot device. Use the arrow keys to navigate and the +/- keys or specified keys to change the order.
  • Save your changes and exit BIOS/UEFI. Usually by pressing F10, but check the on-screen instructions.
  • Restart your computer.

If the issue was an incorrect boot order, this should resolve the problem. If not, proceed to the next step.

2. Check Disk Connections

A loose or damaged cable connecting your hard drive or SSD can prevent the computer from recognizing it. To check the connections:

  • Power off your computer and unplug it from the power outlet. This is crucial for safety.
  • Open the computer case. Refer to your computer’s manual for instructions.
  • Locate the SATA data cable and the SATA power cable connected to your hard drive or SSD.
  • Ensure that both cables are securely connected to the drive and the motherboard/power supply.
  • If possible, try swapping the SATA data cable with a known good cable. A faulty cable can cause intermittent problems.
  • Close the computer case and reconnect the power cable.
  • Restart your computer.

3. Run Startup Repair (Windows)

If you are using Windows, the Startup Repair tool can automatically diagnose and fix boot-related issues.

  • You’ll need a Windows installation disc or USB drive. If you don’t have one, you can create one using another computer.
  • Boot from the installation media. Change the boot order in BIOS to boot from the DVD drive or USB drive.
  • On the Windows Setup screen, select your language and keyboard layout.
  • Click “Repair your computer” in the lower-left corner.
  • Choose “Troubleshoot” > “Advanced options” > “Startup Repair”.
  • Select the operating system you want to repair.
  • Startup Repair will attempt to diagnose and fix the problem automatically. This process may take some time.

4. Check Disk Health

If the drive itself has a fault, it won’t be able to be read properly. You may need to enter the BIOS/UEFI settings to run diagnostics.

  • Restart your computer and enter the BIOS/UEFI settings (as described above).
  • Look for a “Diagnostics” or “Hard Drive Self Test” option. The location and name will vary.
  • Run the diagnostic test.

5. Update or Reset BIOS/UEFI

An outdated or corrupted BIOS/UEFI can cause boot issues. Updating or resetting the BIOS/UEFI can sometimes resolve the problem. Warning: Incorrectly updating the BIOS can render your system unusable. Proceed with caution and follow the manufacturer’s instructions carefully.

  • Refer to your motherboard manufacturer’s website for instructions on how to update or reset your BIOS/UEFI. The process varies depending on the manufacturer and motherboard model.

6. Reinstall the Operating System

As a last resort, if none of the above steps work, you may need to reinstall the operating system. This will erase all data on your hard drive, so be sure to back up any important files first.

  • Boot from the Windows installation media (as described above).
  • Follow the on-screen instructions to install Windows.

Conclusion

The “Reboot and Select Proper Boot Device” error can be caused by various factors. By systematically troubleshooting the issue, you can identify and fix the underlying problem and get your computer booting properly again. Remember to back up your data regularly to prevent data loss in case of future boot issues.