All Drivers Have Been Wiped Out And Cannot Be Re-Installed

About a week ago, I rebooted my machine (custom built by Origin PC), and when Windows came back up, I immediately knew something was wrong. My desktop settings seemed to have reverted to default. I immediately tried to open Chrome and found that I had no working internet connection. My first thought was to reboot the modem and router, but that didn't work. In fact, my laptop and other wifi devices all still had internet access.My next step was to look at the network settings. There was NOTHING there. There were no settings, there were no drivers; the only thing that was there was the basic "would you like to set up a new connection". Although this happened a bit later on, I did try to set up a new connection and the only option it presented me with was a dial-up connection. I checked the ethernet cord and all was fine there. I finally realized that every driver had been wiped clean for network use. The computer came to me using Nvidia's nForce drivers and those were gone, nowhere to be found. And this was only the beginning.I then proceeded to look through my Nvidia files and see if I could find it there. Well, the only Nvidia files that were left were the PhysX and 3D Media Player. My computer was running the generic driver for the Geforce 580. Having no internet on this desktop, I downloaded the latest drivers (and the previous one I was using) and tried to install both of them. Each time I tried to install them, I got a statement saying "Nvidia Installer Failed".

There were a number of possible solutions to that particular problem, though none of them worked for me. So I began to think this was more a systemic issue than just Nvidia alone. My suspicions were proved correct when I tried to open a game (Skyrim) and was greeted with a message saying, "No sound device detected. Skyrim cannot run." So my next step was to look at my audio settings. I went down to the audio icon in bottom far-right area of the task bar, where there are bunch of mini-icons next to the time and date. Before I clicked on the audio icon, I noticed that pretty much every other icon besides the factory default had been wiped as well. When I did click on the audio icon, I was informed that there were no audio devices installed, despite the fact that my Razer headset was plugged in.Finally, I ran the version of MalwareBytes that I had available (no internet, no update to the list), and it found one trojan called "disable.??" I can't quite remember the other part. But the name alone led me to believe I had found the culprit. So, I quarantined it, rebooted, and nothing had changed. I ran a full scan again with MalwareBytes and it didn't pick up anything this time.