Everything seems to be working, but nothing is.
Started out having some issues with my wifi adapter dropping. Thought it might be the adapter so I upgraded it.
Then the install couldn't find the new one, but Windows found wireless networks. But the keyboard couldn't type the password. So I rebooted.
And now we're hanging on the boot.
CPU is there.
USB controllers initialized.
It says the RAM is OK.
...and that's it.
I haven't been inside in a while, so I'm guessing something died of old age.
EDIT: I got it into Windows. But it's slow. I think it might be the HDD.