Thank you, everyone, for your help! Just to update on what I've done so far:
I went ahead and repaired the Master Boot Record (MBR) as suggested on sevenforums.com
. It doesn't indicate if anything was in error, but it did say it was completed.
Also, I ran Win 7 Memory Diagnostic Tool. It did not show anything as a problem.
I have an old copy of memtest86; I'll download the new one and run the tests to see what happens. But that will take some time - I'll probably get to it some time early next week.
I've tried to think of anything that could be causing the problem. Here's some additional information that may/may not be pertinent:
-A year ago, when I built the computer, I had the PNY as my boot drive. In the course of the year, I continued getting boot errors and they always centered around the MBR. I wish I could remember what diagnostic I ran, but one eventually returned that the MBR was so corrupted it could not be repaired. In comes the OCZ SSD about 3 months ago. At first, there were no problems, but now...well, we know what's going on.
-I built and set up the WHS and it was shortly after that was up and running that I kept getting the errors. I had used a beta version before (when I was using the PNY SSD), but the correlation between the WHS and the computer did not exist. Also, the errors are different.
-Now that I think of it, I did reformat the SSD not too long ago. When I did, I changed AV from Norton to MSE. There shouldn't be an issue with Norton since I did a reformat, but could MSE/WHS/Win7 be an issue? I would hope not - they are all MS software.