How to boot your PC using a disc or USB drive
On a daily basis, you boot (start) your computer using its main hard drive, which also has your operating system installed on it (like Windows). In order to clean install or reinstall Windows, you will first need to need to set your computer to boot from a different drive from BIOS.
You can do this by changing the boot order from BIOS or UEFI firmware, either by accessing the boot menu from startup.
How to boot your PC: Changing Boot order
- You can access the boot menu from your PC’s BIOS. In order to do so, you must restart your computer and press the specific key for accessing the BIOS when when your computer starts. Usually you’ll see the message “Press <DEL>” to enter setup or “Press F2 to access BIOS”. In some cases, this key might be F1, Escape or a combination of keys, such as Ctrl+Alt+Escape.
- Once you’re in the BIOS menu, select Boot options menu on the tab on top of the screen.
- To navigate through BIOS, use the arrow keys and Enter for selecting/enabling. In general, you’ll see a list of keys you can use at the bottom-right corner of your screen.
- In the Boot menu, go to Boot order/Priorities.
- Select the desired order to boot by pressing Enter to change it or disable it. You can move the devices up or down by using the + and – keys.
- After choosing the boot order, depending on the drive you need to use for installing Windows (CD/DVD or USB drive), save your settings by going to the Save & Exit menu in the top bar of the screen and choose Save Changes and Reset.
This will make your computer restart and boot using the new order priority that you’ve set earlier.
Note: please be aware that you need to have your installation CD/DVD or USB in your computer’s specific drive before rebooting using the priority order. If the system detects that those drives are empty, it will choose the next available one until it can boot.
After you are done with the Boot drive selection, you can go ahead and Install Windows 10. If you are not sure how to do this, check out our How to install Windows 10 guide.