-BSODs: These happen sporadically, the file given is more often than not an ATI file of some sort, but not exclusively. These may be more frequent when/after I've changed the amount of RAM to or from 6 gigs. It's kind of hard to tell with how completely random they are. Sometimes I'm playing a game, sometimes I'll boot, go to the kitchen, come back and find it rebooting.
-Computer does not respond well to having all 3 sticks of RAM in. Sometimes it'll boot recognizing 6 gigs (and probably BSOD), sometimes it'll recognize 4 gigs, and sometimes it'll recognize 2 and run like ***.
-Fragmented Cursor: I have a dual monitor setup (1920x1080 Asus and a 1280 x 1024 Sony). Sometimes the vertical lines in the cursor will fragment and jumble. This only happens on the Asus monitor, and requires a reboot to fix. I've updated the ATI drivers a billion times, nothing changes.
-GPU Fan: Makes a fairly loud whirring noise on medium loads (maybe 25-45% fan speed). Happens on boot, over time it will go away even at those loads.
-No Disk Detected: I get this error message just before booting from the HDD. So it obviously is detected. So far it doesn't seem to mean anything, but it's odd.
I'm not a very good troubleshooter, so I appreciate any help you guys can offer.
Did you set your memory voltage, speed and timings manually? If not, the default 1.5V might be sufficient to run one or two sticks but probably not enough to keep three stable and that is likely the source of your problems. Set the voltage to 1.65V and you should be more stable.