In this video, I have narrated the process of Installing a new Operating system on your computer without the need for a DVD drive in a short and easy way.
Watch the video here:
1. Download the ISO file for your new operating system from the internet.
2. Make your USB drive bootable using the software “Win2 Disk Imager” on Windows: Download from here, For Ubuntu you can use its Disk Creator that comes pre-installed.
3. Restart your computer > Enter boot menu > Boot from USB.
Note: To enter the boot menu you need to press the combination of function keys (F12, F10 or F12) which varies for each manufacturer, while the system starts up.