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To use this override feature, follow these instructions:

Go ahead and give it a try and let us know if you face any setback in between.The BIOS provides an override feature during POST which allows the user to select a boot device which will override the normal boot sequence. Afterward you can perform a recovery operation, fix an issue with your Windows, or even reinstall it using the bootable CD/DVD.

Instead of the system's hard drive, your computer would be booted from the CD ROM. Enter "Yes" to the pop-up message and exit successfully. Once it is done, you can press the F10 key to save and exit the interface.Use the + and – key to make sure the CD ROM drive is at the top. Here, you can change the priority source for booting.Now, using the arrow keys you need to go to the Boot tab of the interface.These shortcuts would be mentioned at the bottom bar of the screen. Since your mouse won't work, you need to navigate with the arrow keys and make selections with the Enter key. Instead of booting your system the ideal way, it will display the BIOS settings like this.In some systems, the BIOS key is also displayed during the booting operation. You would have to press the key consecutively to make it work. As it would be booting, you need to press the BIOS key to enter its settings.If it is already on, then you can restart it. Now, you can simply turn on your computer.To start with, you need to put the bootable CD or DVD in the optical disk drive of your computer.Now when you are aware of the BIOS enter keys, let's dive and learn how to set the computer to boot from CD ROM right away. You can always try these combinations or read the manual of your system to confirm it. Though, it might change from one system to another. Ideally, one of these keys will work as BIOS enter key. This is done by pressing the BIOS enter key during the booting process.

You should know how to enter the BIOS settings on your system.

The CD ROM drive in your system must be working properly.

Make sure that you have a bootable CD or DVD ready.

Before you proceed, you need to meet these prerequisites: The component consists of essential programs and kernels that make the booting sequence. To learn how to set the computer to boot from CD ROM, you need to be familiar with the BIOS (Basic Input Output Subsystem). We will let you know how to set the computer to boot from CD ROM in this quick tutorial. If you already have a bootable CD or a DVD, then you need to perform some basic steps to change the default booting source in your system. In this way, they can troubleshoot the issue and can even install Windows on the system as well. When there is a problem with the default booting of the system, users have to take the assistance of a bootable CD/DVD to load the needed programs. If your computer has been crashed or is malfunctioning, then you need to take some added measures.