How to solve reboot and select proper boot device

Title: Solution to Reboot and Select Proper Boot Device

Introduction:
When the "Reboot and Select Proper Boot Device" error message appears when booting, it means that the computer cannot find the appropriate boot device to start the operating system. This can happen for different reasons, such as hardware failure, wrong boot settings, or drive issues. This article will introduce some common solutions to solve this problem.

1. Check the startup device connection and failure
If the computer cannot find the appropriate startup device, the first step is to check whether the connected hardware device is correct. Follow these steps:

1. Make sure the hard drive is connected properly. Open the computer chassis and check whether the hard drive data and power connections are secure. Reseat the connections to ensure they are connected correctly.

2. Check other boot device connections. If you are using other storage devices (such as USB drives or optical discs) as boot devices, make sure they are connected correctly and that they are connected to the correct port on your computer.

3. Replace the data cable and power cable. Sometimes, the disk drive's data cable or power cable may be damaged, preventing it from booting properly. Try replacing these cables to resolve the issue.

4. Detect hard drive failure. If the problem is not resolved after following the above steps, the hard drive itself may be faulty. Try connecting the hard drive to another computer to see if it is recognized. If it is not recognized, the hard drive may need to be replaced.

2. Adjust BIOS settings
If the hardware connection is normal, but the "Reboot and Select Proper Boot Device" error still occurs, then the computer's BIOS settings may be incorrect. Follow the steps below:

1. Reset the BIOS to default values. Enter the BIOS menu, usually by pressing the F2, Del or F12 key when booting. Find the "Load Default Settings" option and confirm the changes.

2. Check the startup sequence. Make sure the hard drive is first in the boot order. In the BIOS setup interface, find the "Boot" option and adjust the hard drive to the first position. Save changes and restart your computer.

3. Update BIOS firmware. If the BIOS version is older, it may cause compatibility issues. Visit your computer manufacturer's official website, look for the latest BIOS firmware update in the Support and Drivers section, and follow the instructions to update it.

3. Repair operating system problems
If the above methods still cannot solve the problem, the operating system may be faulty. Try the following methods to fix system problems:

1. Start in safe mode. Restart the computer, press the F8 key to enter the advanced startup options, and select "Safe Mode" to start. Safe Mode can fix system problems by bypassing certain drivers and services.

2. Perform system restore. If System Restore is enabled and a restore point is available, try to restore to a previous system state. Enter safe mode or use the safe mode command prompt to execute the "rstrui.exe" command and follow the wizard steps to restore the system.

3. Reinstall the operating system. If all the above methods fail, the final solution is to reinstall the operating system. Make sure to back up important data in advance and then reinstall the operating system using the operating system installation disc or USB device.

Conclusion:
When the "Reboot and Select Proper Boot Device" error occurs on the computer, we can solve the problem by checking the hardware connection, adjusting BIOS settings and repairing the operating system. If none of the above methods can solve the problem, it is recommended to seek help from professional technicians to better locate and solve the fault.

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