HI Richard,
Here's where we got to yesterday. I managed to download the Win 10 ISO to the SD drive after downloading an extension which makes Firefox fool the website into thinking that's it's running on Linux, which avoided being redirected to the page for the media
creation tool.
I then uninstalled every application that I had previously installed (except the stuff that came with the PC) and made sure that I ran the disk cleanup tool (and checked just about every option on in that dialog).
On running the install, it warned me that the 8.08GB that I had free wasn't enough but, this time, I was given the option of using external storage. Unfortunately, the SD card, which is visible in Windows explorer (formatted NTFS?) wasn't presented as an
option in the pull-down combo box. Luckily, I had some external hard drives lying around so I connected one of those was able to use that instead.
On continuing, the computer rebooted and I was informed that Windows 10 was installing. Then, around 25% I got the smiley face blue screen (90001 x2000D, or something like that). I looked up the error and it says it's possibly something to do with either
drivers or lack of space (I suspect the latter!). The computer then rebooted to another error screen to say that there was no reset image available and that I would need to insert some alternative installation media. I took this to mean that a restore to the
previous state wasn't possible. I was kind of worried at this point so I pressed and held the power button for more than 5 seconds (turned it off and on again, basically!) and it rebooted into the old instance of windows, as it was before. I have no idea why
the restore failed; I'm guessing we must have wiped the factory-installed restore image that's on the hidden 500MB partition somehow (visible in diskmanager).
I'm at the point now where I think my next steps are going to be to buy a big enough USB stick and try to boot/install from that, along with formatting the internal drive and performing a clean install. It doesn't look like it's possible to boot from the
USB external hard drive or the mounted SD.
Speaking of the SD - we bought that to deal with this issue but the PC doesn't seem to acknowledge it and accept it as a boot option for the install media. Any ideas how to get that working?
I'm busy at work at the moment so it's likely that I won't get chance to give it another go until next weekend, unfortunately.
Andy