8 Best Ways to Fix “Reboot and Select Proper Boot Device” Error on Windows 10

Have you ever attempted to boot your computer only to encounter the annoying error of “Reboot and Select Proper Boot Device”?

If yes, then stick around. You will probably find the best troubleshooting solutions in our blog that work with ease and efficiency to solve the error.

Let’s tell why you should never leave this error be and try as many solutions as you can to get rid of it.

Everything becomes super annoying when your system boot up doesn’t let you boot into your operating system. You are no longer able to access anything on your PC. All the systematic functionalities freeze and you are stuck in front of a black screen that displays an error message of “Reboot and Selects Proper Boot Device”. Windows 10, 8, and 7 users are the most affected ones.

There are multiple known and unknown reasons for this error to show up. The most common reasons are corrupted system files and failure of the hard disk drive.

Well, it doesn’t matter what the causes can be when you have all the effective solutions right in front of you. You just need to check them for once before troubleshooting and that’s it.

So, before we rush towards the troubleshooting guide to fix the “Reboot and Select Proper Boot Device” error. Let’s discuss what this error means and what the causes of this error are.

What is the “Reboot And Select Proper Boot Device” Error?

If you are new to this issue, it is better to know what thing you are going to deal with.

Just like the error message name “Reboot and Select Proper Boot Device” suggests, it simply means to restart your PC and select the hard disk device that your system uses for booting.

When your system BIOS fails to locate the bootable device where the OS is initially stored, you see a black window with the warning “Reboot and Select Proper Boot Device”

This error message prompts you to reboot your PC and then select the accurate bootable devices which have the OS installed initially. Several issues can make this issue appear on your screen

Since this error falls into the category of BIOS error, so it can appear on any Windows version such as Windows 7, 8, and 10. The Windows startups remain dormant and stuck whenever you try to reboot your computer.

No doubt, this error has troubled many Windows users now and then. But you are lucky enough to find us here. The troubleshooting solutions in this post will be highly helpful for you. So, keep reading.

We have narrowed down some potential causes for the error message “Reboot and Select Proper Boot Device”. You are recommended to have a quick look at them before troubleshooting. In this way, you can have a better understanding of this issue and thus its solutions.

What Causes Of the “Reboot And Select Proper Boot Device” Error?

This error message stems back to many generative factors. Especially if you have messed with your computer boot order. Though this error occurs due to several known and unknown reasons as well.

Some of the most common causes for “Reboot and Select Proper Boot Device” error are:

  • The disk required for the bootable device has been damaged. It can be older too.
  • A faulty cable, worn-out SATA slot, and outdated hard drive are not letting the BIOS detect your boot disk.
  • BIOS fails to detect bootable devices due to improper connectivity.
  • There is no active partition for the drive. The partition is supposed to be proactive and functional. Otherwise, the bootable storage won’t be detected at all.
  • The boot sequence order in BIOS got disrupted.
  • Corrupted boot files.
  • Corrupted Master Boot Record (MBR).
  • The corrupted operating system on boot.

So, here we are done enlisting the most common causes for this error. Of course, there can be many more. But the mentioned ones will help you to further decide which troubleshooting solution is going to help you. Keep reading.

"Reboot and select proper boot device" Error from techsupport

Top 8 Ways to Fix “Reboot and Select Proper Boot Device” Error

After knowing the corresponding cause for the issue, it will now be easier for you to track down a suitable solution. However, applying one solution doesn’t help. Then, you must attempt all the given troubleshooting solutions.

Let’s find out the topmost effective ways to fix “Reboot and Select Proper Boot Device” on your Windows 7, 8, or 10 computer.

Fix 1: First Things First – Change the Boot Order

Before you head out to perform other extensive fixes, let’s start the troubleshooting with the easiest fix.

What is Boot Sequence? Well, it is a BIOS boot configuration that lets your BIOS initiate booting all the bootable devices in perfect order or sequence.

That order is pre-determined by the manufacturer.

When you change or fix the boot order of the Primary Storage Device where the operating system is installed, the issue can get resolved in a matter of a few minutes. So, we recommend you start with this solution.

Follow these instructions to change the boot sequence:

1. Turn off your Windows PC.

2. Press the Power Button to boot it up.

3. Press any preferred keys from ESC, DEL, F1, F2, F8, F10, or F12 to access BIOS Settings.

4. Enter the Boot Options once you access BIOS Setup Utility.

5. Change the settings to Primary Boot Device.

6. The arrow key will take you to the top of the list.

7. Save the changes you just made.

8. Restart your PC and see if the error has disappeared.

It didn’t work out. Don’t worry. We have so many other solutions in line. Move to the next solution.

Fix 2: Inspect the Power Cable to Your Hard Disk Drive

The power cable is used to connect the motherboard and your hard disk drive where the operating system is initially installed. Let us suppose that the power cable is loosely held, improperly connected, or broken.

If any of this happens, then your hard disk drive doesn’t get detected for all to perform the boot.

This is exactly why you need to inspect the power cable ASAP.

Here is how you do it:

1. Turn off your computer.

2. Now open your computer.

3. Look for the power cable that goes from the hard disk drive to the motherboard.

4. Inspect the connection overall to see if there is anything unusually wrong.

5. Tighten the cable connection and make it properly held if you see something wrong there.

6. If that doesn’t solve the error, then remove the power cable and test it on another PC.

7. And if that too doesn’t do the job for you, then the cable is frayed or damaged.

8. Replace it with the new one.

This should now solve the error. And if the error persists, then you should keep moving to the next solution. You never know which one of them works for you.

Fix 3: Perform Boot Drive Detection in Your Computer’s BIOS

When the bootable drive is not detected in your PC’s BIOS, then you are likely to face the error message “Reboot and Select Proper Boot Device” even more.

So, you need to check if the boot drive is being detected in your computer’s BIOS or not.

Here is how you do it:

1. Reboot your computer.

2. Now press keys F1, F2, ESC, or DEL keys to get to the BIOS Settings.

3. The main window of BIOS Settings will be opened.

4. Here you will see the list of all the devices that your BIOS has detected.

5. The list must contain any hard disk drive that has been linked with the boot settings.

6. If you don’t see your hard disk drive, then shut down your PC immediately.

7. Switch on your PC again.

8. Now you have two options to go for. Either connect another SATA cable to another SATA slot in the motherboard or connect a hard disk drive to another SATA slot.

9. Now check immediately if your hard disk drive is detected or not.

10. If it is, then it is quite clear that either the SATA port or the cable was damaged.

Well, if it is not detected at all, you know that the boot disk has been corrupted or damaged.

Fix 4: Clean RAM Of Your Computer System

The full of dust and dirty RAM can sometimes be the cause of this error. Especially if you have not cleaned it ever since you got your PC. So, you should clean the RAM right away.

Here is how you do it:

1. Shut down your PC.

2. Pull off your PC’s sideboard or unscrew the laptop’s bottom to locate your RAM.

3. Unclamp the space beside your RAM gently.

4. Remove it from its position.

5. Clean the dust off your RAM with a delicate cloth.

6. Put it back into its place.

7. Reboot or restart your PC to check if the error is gone or still there.

Proceed to the next solution if you still see the error.

Fix 5: Active Your Inactive Primary Hard Drive Partition Using Command Prompt

If none of the above solutions seems to be working for you, then you need to go out of your comfort zone and try something big.

Changing the primary hard drive partition as active can solve the error message “Reboot and Select Proper Boot Device”.

So, if you haven’t activated the primary hard drive partition, negate this error once and for all now by tweaking changes using Command Prompt.

Recovery Disk or Windows Installation Media Disk are used in the process. You need to set it as your BIOS primary boot media.

1. Perform all the necessary on-screen instructions to jump to the option of recovering or restoring your PC.

2. Click on any of the given options.

3. A window will open up. Either it will be System Recovery Options if you have Windows 7 or Troubleshooting Screen if you are Windows 8 or Windows 10 user.

4. A list will appear on the window. Choose the Command Prompt.

5. Get into the Command Line: “diskpart” [enter].


6. Enter the command line list disk [enter] option to locate all the disks installed on your system.

7. Open the command line select disk 0.

8. Hit Enter.

9. Now enter the inactive partition or command line list partition 1.

10. Hit Enter again.

11. Enter the command line active [enter] to activate it from its inactive position.

12. Diskpart will notify you that the partition is made active now.

13. Exit the command line window after performing all the important steps.

14. Restart your computer and check if the error message still appears.

Fix 6: Set Your BIOS to Default Values

If you have come this far, it probably means that none of the above solutions worked out. Don’t lose hope. Let us go a little deeper and try another couple of solutions.

When your computer’s BIOS is not set to the default values, the stability of your booting system might get disturbed.

This instability later results in the occurrence of the “Reboot and Select Proper Boot Device” error. So, set it to the best default values ASAP.

1. Reboot or restart your PC.

2. Get into your BIOS settings by following the instructions.

3. Look for the option that says load optimal defaults.

4. Complete the loading of the best defaults.

5. Restart your computer.

Fix 7: Disable and Enable the Legacy Boot Feature

Your computer’s BIOS has some features that can turn out to be problematic if you don’t disable or enable them back.

For example, the Legacy Boot feature. The error “Reboot and Select Proper Boot Device” will eventually go away after you disable and enable it.

Here is how you do it:

1. Restart your PC.

2. Get inside your computer’s BIOS Settings.

3. Locate the Legacy Boot option there.

4. You will find this option in the tabs of BIOS.

5. Disable it if this feature is already enabled.

6. Or, enable it if the feature is already disabled.

7. Save changes.

8. Exit the BIOS settings.

9. Restart your computer and check if the error message is still there or not.

Fix 8: Replace Your CMOS Battery If It Is Damaged

Gone this far and still didn’t get the issue resolved? Well, don’t need to panic. All this time, the main culprit can be the damaged CMOS battery. Replace it ASAP if it has been damaged or frayed.

1. Open the computer’s casing.

2. Get into the motherboard.

3. Take out the CMOS battery.

4. Press and hold the Power Button to get rid of residual charge in the meantime.

5. Now replace the old CMOS battery with a new one.

This might ultimately resolve the “Reboot and Select Proper Boot Device” error.

Final Words

Got stuck at the screen saying, “Reboot and Select Proper Boot Device”? Simply use the above-mentioned troubleshooting solutions and the error will go away.

I am pretty sure none of you wants this error to ever come back. So, install the best cleaner on your PC. In this way, no changes in the windows registry database will cause you further problems in the future.

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