Here is my walk if shame: I ran the command
sudo rm -rf ~ /.local
And it deleted everything on my system. It is (or was) a Vizio CT14. The reason I ran this command in Terminal, if this is relevant, was to uninstall Ubuntu so I could reinstall a clean version.
The PSU is working, as evidence by the blue light and churning sound of the hard disk, though the screen doesn't come on. Does this mean my graphics card has been deleted too?
Any help would be appreciated