I ended up formatting it, updating some asmedia sata controller drivers? (everything else was up to date) and switched out the sata cable and it seems to be running ok now, but I haven't really done anything with it yet either.
Norton 360 claims there's no viruses on the system, and I'm sure I didn't install any of the extra AV's. When you say intel mb chipset, what do you mean exactly? The Intel 7 Series/C216 Chipset Family Sata AHCI Controller? I couldn't find any drivers for that