So, I tried playing around. I disconnected various things to no avail, reseated everything and still no resolution. However, this problem is intermittent. When it works, it works all the way (I'm making this post from that very computer). Any suggestions as to what can cause this problem and what steps I should take to try and resolve it?
My computer is a custom AMD Athlon 64 3000+ with 2 GB RAM on a ECS motherboard. Forgive me if I dont' know too many other specifics, but feel free to ask if you need them and I'll try to provide some more details.