So I have a really bad feeling that I've bricked this laptop. It's an Asus TP200SA and has the eMMC SSD and RAM permanently affixed to the mainboard. It is not upgradeable at all except for the addition of a microSD card.
In my attempt to fix a number of issue relating to viruses and software corruptions, I backed up the client's files (not the system state), booted from a Windows 10 install USB drive and removed the partitions - all of them - so I could do a fresh install of Windows 10 without all the bloatware.
After removing the partitions, I try to install Windows on the empty space and the installer says it cannot be used due to it not being a bootable device.
So I restart the laptop and go into the BIOS and the SSD has completely disappeared from the BIOS.
I've updated the BIOS to the latest release in case there was a bug fix, but there's still no SSD listed in the SATA devices.
Help! I don't know what to do from here...