Windows 8.1 installation corrupted my account/broke Windows 8

[Secone]

Last night I tried to install Windows 8.1, except it was taking an hour longer than I thought it would, I had to leave where I was installing it and move back to my room, so I had no choice but to close my laptop's lid and stuff it in my backpack and head on back to my place. This was around the time during the install when, on the main screen it had said "Setting up a few more things..." or something along those lines. When I took it out and plugged it back in to the charger and everything it said that it was restoring the previous version of Windows, I didn't think it would have been that big of a deal if I had closed the lid but apparently not, whatever, I figured I'd just go through the install process again.

But of course, it isn't that fucking easy. When I logged back into my user account, it said it had to use a temporary profile because my actual account is corrupted or something, so basically I still have all my data and files but I'm in a temporary account for I don't know what reason, I just figured I could redownload 8.1 and install it again and see if that fixes it, but no, when I download it in the store app it has the download from last time saved but when it gets to the "Gathering info..." stage it just quits and tells me it can't install it, giving an error code 0x80070004.

To sum up everything I've been trying to do since then:

I've restarted at least 20 times, I've tried to use Window 8's PC refresh option but that process gets to 1% before quitting out and telling me it was unable to refresh the PC.

I've followed advice on making a new user account and transferring all my files from the corrupted account to the new account, but that just managed to break my computer even further, luckily I somehow managed to undo it.

A couple errors specific to the fact that my laptop is an ASUS, I get random errors saying that I need to download ATK drivers and I get other misc. errors about ATK things not being able to start properly.

After that, the computer had been automatically logging itself into the Administrator account without me setting it up to do that or anything.

I've tried deleting the Windows 8.1 download from the Store and redownloading it from scratch, nothing.

I have no fucking clue what the fuck to do. As far as I am aware I still have all of my files, I'm currently backing them all up on an external hard drive and then I plan on doing a complete reset, but since a refresh didn't work I don't have high hopes in that working either.