Reboot And Select Proper Boot Device

Many customers have reported issues with Reboot And Select Proper Boot Device. When the BIOS is unable to locate the boot drive, this error occurs.

To put it another way, the BIOS is unable to locate the drive that contains your operating system (OS). So, the motherboard is isolated from the OS. Another possible cause is a corrupted operating system.

→Error “Reboot And Select Proper Boot Device” is caused by the following factors:

How To
How To
  • Factors Associated With the Environment
  • The BIOS is unable to recognize your boot disc because of a faulty or damaged SATA cable.
  • The Boot Disk is connected incorrectly.
  • You’ve used an old, defective boot disc.
  • Factors of Reason: There isn’t a partition that’s actively used right now.
  • Windows boot files should be saved in an active partition.
  • Master Boot Record is damaged.
  • The BIOS boot order is out of whack.
  • Your computer’s boot files have been corrupted.

The error can be fixed by following the steps outlined below:

1. Reboot and Select Proper Boot Device Problems Windows 10, 8, and 7 

An error message that says to ‘Reboot and Selects Proper Boot Device’ is commonly seen when RAM is dirty. If your computer repeatedly reboots and selects the wrong boot device, you should clean your RAM, which means cleaning any dust that has built up.

2. Hard Drive’s Power Cable (HDD)

The Hard Disk Drive will not be detected if the power cord is not correctly attached or is broken, resulting in the error message “Reboot And Select Proper Boot Device.”

As a result, testing your power cable on another system and seeing if the issue persists indicates that your power cable is defective. As a result, get a new power cord and replace the old one.

3. Changing Your System CMOS Battery

System date and time, system hardware configurations, and other data are stored in the CMOS Battery, a little coin-shaped chip within the computer, and it might malfunction, leading to errors like “Reboot and Select Proper Boot Device.”

4. Verifying BIOS Boot Order Settings

If the first boot device is not a hard drive but a USB drive, the error message “Reboot and Select Proper Boot Device” would be displayed.

As a result, you’ll need to verify the BIOS Boot Order Settings and, if necessary, modify the boot device. Follow these procedures to enter BIOS:

Step 1: To begin, press and hold the Shift key while shutting down the computer. Press the power button while holding down the function key on the keyboard (F1, F2, F3, Esc, Delete).

Step 2: Wait until the BIOS screen appears before releasing the function key. When you enter the boot menu, follow the steps to open the Boot priority order list and set the First Boot Device to HDD.

5. Using diskpart

Another reason for “Reboot and Select Proper Boot Device” errors is that your primary hard disc partition is no longer operational. Just activate the primary partition on your primary hard disc. To do this, follow the steps outlined below:

Step 1: Place a recovery or installation disc in the computer’s drive and boot it up. Start your computer and select a bootable disc to use as your starting point. To restore, recover, or repair your system, explore the menus on the screen.

Step 2: System Recovery Options or Troubleshooting screens appear after clicking this option in Windows XP/Vista/7 or Windows 8/8.1.

In Windows XP, Vista, and Windows 7, select the Command prompt option from the System Recovery Options box, and in Windows 8 and later, follow these steps to enter the command prompt:

Advanced Options -> Command Prompt Troubleshooting

Press Enter after each instruction to go to the next step.


List the components of a partition.

Select the partition X from the drop-down menu (x is the name of your primary partition)


Easy Recovery Essentials can be used to launch the command prompt if you don’t have recovery/installation media. To do this, follow the steps outlined below:

Step 1: To begin, click on the link. Save the file to your computer. Burn the file to a CD or USB drive. You can now proceed to Step and put the media into the computer. Next, restart your computer and boot from the removable disc you inserted in step.

Step 2: In the Select, a Recovery area, select CMD and press Enter. Run the previously listed commands.

If none of the aforementioned options work, your final resort is to reinstall Windows and attempt data recovery while doing so.