Hey Jeremiah. I'd recommend that you download DLG (Data Lifeguard Diagnostic software) from here: http://support.wdc.com/product/download.asp?groupid=810.
Run both tests (Quick and Extended) and see if there's anything out of the ordinary.
You could also try updating the BIOS or the drivers of the HDD, but we'll probably need a bit more specific info in order to narrow down the cause for this alert.
Hope that helps. Let me know how things go.
Boogieman_WD