Methods to Resolve “Reboot and Select Proper Boot Device” Error

 

A computer system that does not boot into your operating system when it is turned on is never a pleasant thing to experience. Generally, an error message that reads "reboot and select proper boot device" means that the computer's basic input/output system (BIOS) cannot locate the boot device containing its operating system. This happens for many Windows 10/8/7 users who get the "reboot and select proper boot device" black screen error message. Various reasons can cause this error to appear, including corrupted system files, a failed or failing hard disk drive, or even a messed-up boot order. So, now, let's look at the various solutions to know how to fix reboot and select proper boot device. 



Resolve “Reboot and Select Proper Boot Device” Error


 

Methods to Resolve "Reboot and Select Proper Boot Device" Error in Windows 

You could save a lot of time by taking the corresponding measure stated below if you know the exact cause of this error. Follow the below methods with their stepwise procedure.

 

1.    Check the Power Cable Connecting Your Hard Drive Disk

When your power cable is broken, frayed, or connected improperly, the hard drive won't be detected by the computer. When your hard drive isn't detected by the computer, it's likely that your hard drive isn't functioning. So, to check the power cable, follow the below steps.

 

·         First, shut down your PC and open it. 

·         Now, examine and check that the power cable connecting your hard drive disk and motherboard to see if it is physically damaged or not connected properly.

·         When the connection appears to be working properly and you are still receiving the error, remove it from your computer so that it can be tested on another.

·         Replace the power cable with a new one if the error occurs on the test computer.

 

2.    Clean Your RAM

If you haven't cleaned your RAM since you got your computer, it may be causing the error. To clean the RAM, shut down your computer, remove the sideboard of your computer by removing the screws from the tower/bottom of the laptop and locate your RAM. Remove the RAM from their slots by unlocking the clamps and cleaning any dust off with a soft cloth. Now, place the RAM back in their slots after they have been cleaned.

 

3.    Set BIOS to Best Defaults

Even though this solution is a long shot, not having your BIOS set to its defaults can sometimes cause instability, and this instability may be the reason for the "reboot and select proper boot device" error. You can access this by rebooting your computer and launching your BIOS, and locating the option to "load optimal defaults." Once loaded, restart your computer.

 

4.    Disable/Enable Legacy Boot

There are times when the basic input/output system (BIOS) has a feature called legacy boot that can cause the "reboot and select proper boot device" error. You can solve the error by enabling or disabling the feature.

 

·         The initial step is to restart your computer and enter the BIOS.

·         In your BIOS, find the legacy boot option by going through all tabs and/or settings.

·         Upon finding it, disable it if it is enabled. If it is disabled, enable it.

·         Now, save the changes and exit from the BIOS and again restart your computer.

 

So, the above solutions will help you to solve the issue. In case the issue still persists, the only thing that may work is to update your SATA drivers by using Safe Mode. If this doesn't work, replace your motherboard's CMOS battery as it may contain errors. Alternatively, you may need to do a fresh reinstall of Windows if you suspect your operating system is corrupted or the hard disk boot drive is damaged, corrupted, or dead.


Related links: How To Make Windows 11 Bootable Using USB Drive?

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