Scott,
Do you have OpenManage Server Admin (OMSA) installed on the server? If so, is there anything showing in the hardware log that also happened in that time frame?
If not installed you can download from here - www.dell.com/.../poweredge-830
If you don't want to install OMSA you can also run a dset report and send that to me to review for you.
You can find Dset reporting tool here - www.dell.com/.../poweredge-830
Let me know what you find.