“Reboot and select proper boot device or insert boot media in selected boot device and press a key” is an error message that only occurs when your computer system BIOS is having trouble finding the Disk Or other bootable storage where the system is mainly installed.
As it is a BIOS error, which means you can get this error message on any computer and on any operating system :
(Windows 7 or Windows 10) and it can be on just like your laptop or your desktop computer.
Causes of Reboot and Select Proper Boot Device
Any of the following could trigger this problem:
- The boot disk is not correctly connected, or the disk was damaged or at failed.
- The startup disk is connected via a faulty cable, a damaged SATA slot, so it cannot be detected by the BIOS.
- Incorrect boot in BIOS.
- The partition that stores Windows startup files is not set as active, then Windows will be unbootable.
- Master Boot Record (MBR) is damaged or corrupted.
- Boot files are lost or corrupted.
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Method 1: Change the boot order
The most comfortable to solve the problem of Restart and select the boot device appropriate is only to make sure that your Hard disk is ranked the first in your startup list.
It’s easy to do. Just follow these steps:
- First of all, restart your pc
- Press on the appropriate key to open the BIOS menu while the system restarts.
- This key depends on the manufacturer of the computer and its model.
- Usually this is indicated on the first window that appears on your screen with the company logo.
- It can be one of those keys Esc, del, F2, F9, or dedicated keys like on Lenovo and older Sony Vaio computers.
- Then go to the tab Boot in the menu of BIOS
- Using the keys + and – on your keyboard, change the boot order starting with the hard drive from the computer.
- Save the changes made to the settings by pressing the F10 key.
- Restart your computer and check if this fixed the problem
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Method 2: Check hard drive condition to repair Reboot and Select Proper Boot Device
You need to test if your hard drive has failed or has ever failed. To do this easily, use a simple and easy-to-use tool, such as the program Easy Recovery Essentials .
The automatic repair process will signal automatically any problem that is on your Hard disk or maybe even on the RAM.
Here is how you can use this tool.
Plug it in and boot from your BIOS menu starting with DVD and or USB in boot order.
- Then select the option System restart tool.
- Click on the option To continue and wait for the process of auto repair ends its execution. The process of auto repair will report all the problems that are on your Hard disk or on your RAM.
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Now click on the option To restart, and your PC should start as before, without launching Reboot and Select Proper Boot Device error (if possible !).
If this is not the case here is another solution
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Method 3: Disable Legacy Boot Mode
On PCs that have UEFI boot mode instead of BIOS, keep the option Legacy mode active could have caused the “Reboot and Select Proper Boot Device” error.
In this case, you can simply turn off the Legacy mode option, and then restart your computer.
Here are simple steps you can take to turn off Legacy Mode on your computer.
- First, restart your computer and navigate to the BIOS menu by pressing the key designated for your motherboard brand.
- It can be one of these keys: F2, F8, F12, Esc or the key Of the.
- In the BIOS menu, go to the tab Start-up using the keys arrows, and navigate to the option UEFI / Legacy Boot Priority.
- Then press the button Between and change the boot priority to UEFI only.
- Press the key Entrance, then the key F10 for save the modifications that you made in the BIOS menu.
- When finished, exit the UEFI menu you will automatically be exited from the menu of BIOS
- At last, restart your computer and see if it restarts as usual.
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Method 4: Use DiskPart
You will need a Windows operating system installation CD or the bootable usb stick for this method.
Once you have a bootable usb stick with your Windows operating system, you’re all set.
Follow these steps, and you should successfully troubleshoot the Reboot and Select Proper Boot Device issue.
- First, insert Windows bootable media where the installation disc and start from support.
- In the window that appears, choose the option Repair from, click the option Command Prompt.
- Type the disc part in command prompt and press Entrance.
- After the above command, choose the disc 0 and press again Entrance.
- You see that the disc 0 is the disk where the default operating system was installed.
- It is important to work on it.
- Then type the partition from the list and press again Entrance.
- Then type the partition 1 and press Entrance.
- After this command, type active, then press again Entrance.
- What this does is that it activates the primary partition of your operating system this partition which happens to be partition 1.
- Also, watch out for any error like Windows Update error 0x80070002.
It will select your boot partition again, and you should never see that reboot again.
Finally, here are 4 methods that can help you eliminate this problem and never see it.