This device is an HP Stream notebook, model 11-r050sa running 64 bit Win 10 Home.
It's owner cannot get it to update Windows despite being nagged by MS so he passed it on to me - 'You know more about computers, Chris !'. The trouble is I cannot get it to update either. Currently it is running Build 10240 which I believe is the original 1507 RTM version back in 2015
This device can best be described as a crossover between a tablet and a laptop - it has the form of a laptop and the specs of a tablet. The HD has a capacity of 28 GB and there is about 500 MB free. With more sweat I can almost certainly free up perhaps another 1GB but this comes nowhere near the 8GB of free space it says it needs for the update.
It has no optical drive and one each USB 2 and 3 sockets. After playing around with it for a while I decided to try booting from a USB, I had just made up a Win 10 1703 stick to try this. It didn't work as obviously USB is not the first boot priority so I tried to get into the Bios. After a couple of efforts using the obvious buttons a Google search suggested 'Esc' + 'F10' but this didn't get me there. So . . .
How do I get into the BIOS/UEFI on this miserable device ? Or . .
Is there an easier way to get it to accept an update ?