I would start trying it out. Download the image, get an empty usb stick of serious size (32GB or more, up from 8 should be no problem though if you can find it) and use eg Rufus Disk Imagerto install it on the usb stick. When done, restart the computer i to the bios or boot menu (look at the message when starting, f1 f2 del or enter should drop you into bios, f12 on some computers drops you straight into a boot menu).
Feom bios go to boot menu, from boot menu to usb stick and select the option “boot from usb stick”.
Note the login and password should be in the documentation close to the image.