how to fix reboot and select proper boot device error in windows 10 8 7?

There is no definitive answer to this question as it depends on the BIOS version and CMOS clearing procedure used. However, most BIOS versions will clear the CMOS when the system is turned off and then when it is turned back on, the BIOS will load the latest settings.

A corrupt BIOS can cause your computer to fail to start or to experience other issues. A corrupted BIOS can also allow unauthorized users to access your computer.

The CMOS reset button is usually located on the motherboard near the processor.

Yes, you can enter BIOS from Command Prompt. To do this, type the following at the command prompt:
bcdedit /set {bootmgr} path = “C:\Windows\System32\BIOS”
If you want to boot from a USB drive, you will need to add the USB drive as a secondary boot device.

There is no one-size-fits-all answer to this question, as the methods for resetting a BIOS vary from computer to computer. However, some methods for resetting a BIOS include pressing the reset button on the computer, booting from a bootable media (such as a USB drive), or entering the BIOS setup menu.

To boot into BIOS without startup, hold down the F2 key during startup.

To change BIOS settings on a Windows 7 computer without restarting, open the Start menu and select “Control Panel.” On the Control Panel window, under System and Security, click “System.” In the System window, click “Advanced System Settings.” In the Advanced System Settings window, under Performance Options, click “Settings.” In the Settings window, under Advanced Tab, click “PCI/PCIe Bus Configuration.

To get into BIOS without F2, you can press the Delete key while the computer is booting up.

The boot key for Windows 7 is the first letter of the Windows 7 installation media.

To open BIOS on Windows 7, follow these steps:
Open the Start menu and click “Control Panel.”
Double-click “System and Security.”
Click “Administrative Tools” in the left pane.
Double-click “BIOS.”
Select the “Enter New BIOS Setup” option.
Follow the on-screen instructions to complete the setup process.

To start your computer in safe mode, press and hold the F12 key when you start your computer.

To reboot your laptop Windows 10, press the power button and then press the “F8” key repeatedly until you see the boot menu. Select “reboot” from the menu and wait for your computer to restart.

To start Windows 7 in Safe Mode, press and hold the Shift key while clicking the Restart button.

Yes, F8 is safe mode for Windows 10. In safe mode, only essential system services are running, which helps to protect your computer from potential damage.

There is no one-size-fits-all answer to this question, as the best way to select a boot device depends on your specific needs and configuration. However, some tips to consider include:
Determine which bootloader you want to use. For example, GRUB or Syslinux are common bootloaders used on desktop computers. If you’re using a laptop, look for a bootloader that supports UEFI.
Consider your hardware.