I can tell you that there's probably an extra step that the IT guys didn't tell you about as well... When you choose the clean format option, yes it does reinstall a new version of Windows and you lose everything, including all the utilities that ASUS bundled with, as they said..
However, i discovered that the media creation tool detects existing versions of windows on the drive and copies them into a new folder called "Winsows.old" in case something goes wrong during the installation or the user wishes to revert back. This folder was 8GB in size on my ASUS so, even though i only had Windows installed and nothing else, the install world fail every single time, even with the clean install. I bet this is why it won't start the installation unless there is 8GB free. Will there was more thant8GB fee on mine when i started bit it still failed every time.
The only way i managed to do it was at some point after selecting stage 4 in your instructions there was an option to select the drive to install on. On that screen i needed to also choose to completely format the drive i wanted to install onto before continuing with the clean install. So yes, i had to completely wipe the drive to the point it wouldn't boot before installing from the stick.
To my surprise, the computer did update but itiworked for 30 mins before we got a blue screen. It looks like the update itself doesn't leave enough free space for Windows to run nicely. The laptop crashes to blue screen every 30 mins or so now so it's pretty much umusable. When we look up the error it says it's down to lack of m we memory, and it has access to a 64GB card.
It's actually my wife's laptop. She wanted something that was light and could fit into a handbag that she could run Word on and browse the web. I figured this Asus thing would be ok as we could add the extra sd card for storage. Waste of money. I'm going to try putting Windows XP or windows 7 on it out of interest, see if they run any better. If it still blue screens it's going in the bin.