Before everything happened, I tried to install it using a flash drive and it worked perfectly when suddenly my PC automatically disconnected the flash drive. And I tried it again with the same flash drive but it didn't detect it. Tried it with another and it still didn't work.
So, I was trying to fix the famous Windows 8 "CD/DVD drive stopped working" fail. After researching online, I found that if I uninstalled the AMD SATA driver, and restarted, it should reinstall automatically. I tried this. It didn't work (I'm now guessing that was for Windows 7). The computer then wouldn't start up at all. It ran through diagnostics, but came up with an error and restarted.