Good morning, please forgive me if this issue is discussed elsewhere, I've been unable to locate a thread which covers my issue.

We've got an older server which has been locking up randomly. I've tried to diagnose the issue, but haven't come to any conclusion about what exactly is causing the lockups. The best information I have is from a diagnostic run at boot-up. The utility reports a PCI Parity Error. I'd like to drill down to the exact piece of hardware that's generating the error, but haven't figured out how to do that. I can't find a reference to the event in the system log, and the diagnostic utility doesn't identify which hardware on the PCI bus is generating the error. I'd like to make an informed decision about how to proceed with restoring the stability of the system. There are signs of a disk problem, but I think those might also be controller issues. Chkdsk runs periodically upon rebooting the server.