How to Fix Reboot and Select Proper Boot Device Error on Windows

Reboot And Select Proper Boot Device

The Reboot and select proper Boot Device error on Windows computers is relatively standard. For this reason, we will mention several simple solutions to the problem today, so your system can resume regular operation.

Why does your computer advise you to reboot and select proper Boot Device? You will see the error message Reboot and select proper Boot Device when your computer first starts up, which is the first and most obvious symptom that you are dealing with this type of error.

Why Does Reboot and Select Proper Boot Device Error Occur?

There could be many causes for it:

  • Incorrect boot order
  • The legacy mode is turned on or off
  • HDD failure has occurred
  • The system partition is configured to be inactive
  • Cleaning the Windows Registry is necessary

Fix Reboot and Select Proper Boot Device Error on Windows

As you can see, there are numerous situations in which you might experience this issue. How can the error Reboot and select proper Boot Device be fixed? There are several approaches you can take.

1. Experiment with the Boot Order

The wrong boot order is the most common cause of this issue. Therefore, we should try to fix that first. 

Step 1: Restart your system.

Step 2: Press the designated BIOS key in your system. 

Note: The BIOS key flashes immediately after the system loads up. The key can be Esc, Del, F2, F8, or F12. Check with the manufacturer beforehand.

Step 3: Open the Boot Tab.

Step 4: Change the boot order of the system. Put the hard drive as the priority disk.

Step 5: Save the changes that you made.

Step 6: Restart your system.

This method fixes the error in most cases. However, if you still encounter the error, you can try the following methods in this article. 

2. Ensure The Proper Working of Your Hard Disk

You need to ensure that your hard drive has not failed. Some clear indicators of a failed hard drive are laggy performance, unusual noises, and many corrupted files and folders. Several programs on the internet will tell you whether your hard drive is corrupt. 

3. Disable Legacy Boot (Applicable on UEFI)

If your system runs UEFI instead of BIOS, Enabled Legacy Mode can cause the hard disk to misbehave. This is how to disable it in this case. 

Step 1: Restart your system.

Step 2: Go to the UEFI menu by pressing the designed key. 

Note: The UEFI key flashes immediately after the system loads up. The key can be Del, F2, F8, or F12. Check with the manufacturer beforehand.

Step 3: Go to Security Tab, and click on Legacy Support.

Step 4: Turn off the Legacy Mode.

Step 5: Save the changes.

Step 6: Exit the UEFI menu.

Step 7: Restart your system.

4. Try Diskpart

You might experience the select proper boot device error if your system’s primary partition isn’t marked as active. Set your partition back to active to see if this is the case. You will require your original Windows installation media and the Diskpart programme to accomplish this. The guidelines are as follows:

Step 1: Insert the Windows disk and select Boot from Media.

Step 2: Look for Command Prompt in the System Recovery Tools or Troubleshooting Menu.

Step 3: Type diskpart and press Enter

Step 4: Type select disk 0 (0 being the disk where your Windows is installed).

Step 5: Press Enter.

Step 6: Type list partition and press the Enter key

Step 7: Type select partition 1 (1 being the number of partitions”

Step 8: Type active and press the Enter key.

This method will activate your partition, and you will stop running into the error that keeps showing. 

5. Clean Out Your Registry

Problems with your Registry can cause numerous errors in your system. You may require registry cleaning and optimization if your Windows system is clogged with leftover files from uninstalled programmes.

It should be noted that creating a system restore point is highly recommended before making any manual changes to your Registry in case something goes wrong. You must first confirm that System Restore is turned on on your system. 

It should be turned on by default, but it might have been manually turned off. What you should do is:

Step 1: Search for System Restore.

Step 2: Select Restore Point.

Step 3: Choose the drive you want to inspect and select Configure.

Step 4: Ensure you have activated the Turn on system protection

After getting done with this, continue to create System Restore Point. Follow these steps: 

Step 1: Right-Click on Start.

Step 2: Open the Control Panel > go to System Maintenance, and then System.

Step 3: Go to System Protection on the left side

Step 4: Click create here

Step 5: The date you create the restore point or the reason you’re doing it, such as “before Registry cleanup,” can be included in the description you can write.

Step 6: Click Create and end the process.

After that, you can clean up your Registry by removing unnecessary keys, references to shared DLL files that don’t exist, spam startup entries, and more. 

It is essential to note that only knowledgeable users are advised to make manual changes to the Registry.


How do I fix Windows 10 reboot and select the proper device?

You can follow the steps and methods mentioned in this guide to reboot your device. 

What does it mean when my PC says reboot and select proper boot device?

Most of the time, it means that your system cannot read your hard drive. Following this guide will help you get rid of this error. 

What is the BIOS key for Windows 10?

Different manufacturers use different keys for accessing the BIOS. You can check your manufacturer’s website or use the keys mentioned in this article. 

Final Words

The “Reboot and select proper boot device error” is very common in Windows systems. To avoid this, users must ensure that the system’s internals is free of junk files. Early signs of hard drive corruption should not be ignored either. This guide will help you in case you run into this error again.

Posted by
Ratnesh Kumar

Hi Everyone, I am Ratnesh Kumar. Currently, I am running a Media company called Yorker Media. Under the Yorker Media portfolio, we have five Tech Websites targeting global audiences and several websites for our Indian audiences. Combining all those websites, we are getting close to 300k visits a month. It all started in 2017 when I started my YouTube journey as a Tech content creator. At the same time, I also learned about Blogging and started a blog as an extension of my YouTube channel. So, after hustling for over a year, I quit individual content creation and moved to the tech media business. I started my first project in the industry, TechYorker.Com. Initially, I needed more funds to run the business. So, to arrange funds, I started working as a freelancer. After almost five years, I have experience with growing a Digital Media business, and Freelancing. I have planned to create content around the skills and knowledge I have gathered in the last few years. Thank you!

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