After searching and attempting multiple solutions, nothing has worked. The mouse doesn't work even before login, now. Here is my blacklist.conf as it relates to mice. I believe it was set this way prior to the problem, but I don't know what other information to provide for assistance.
This all came after I fixed my Wireless driver. It seems as though it must be related, since it started afterwards.
# these drivers are very simple, the HID drivers are usually preferred
Also worth mentioning is that sometimes when I login, the wrong theme loads. What the heck is that about?? Highly annoying! When I log out and log back in, it usually loads the right theme, then, but why would it do that??