Earlier on I tried to deactivate a plugin called Pretty Links Lite and immediately the whole admin panel became a white screen. I figured I should try to delete the plugin via FTP but that didn't fix it so I tried to delete all of the plugins figuring there must be a conflict and then I found no site at all... In retrospect though it's possible I lost it all immediately because I as probably viewing the home page through the cache.
I went and found a backup on the server from a few hours before and uploaded that to the server. Then I found the home page looking normal but if I clicked on any link I got a 404 error. I tried once more to upload the same files and now all I have is a white screen and it's impossible to login at wp-login.php because it's just a white page.
Does anybody know how to fix this? It's driving me mad.