For months my computer system has been having problems, and throwing
all kinds of errors.

In particular the dreaded "Event ID: 51", combinded with errors and
warnings about failures "during a paging operation".

HOGWASH!!!!!

I finally got fed up with it and dug in for the long haul. I took my
drive to work and mirrored it onto a known good drive.

Installed the alternate drive in my system, and all was well... for
about a month, then right back to the same old crap.

This time a purchased a new drive and mirrored again, and did
diagnostics on all the drives. All say OK. I put the NEW drive in, and
right away - paging operation errors - along with an entire host of
errors and warnings too numerous to list!

Finally, after much Googling, I found a suggestion which in my case
turned out to be the source of the problem...

The SATA Cable going to the drive in quesiton turned out to be the
problem!

I replaced the cable with a high quality one, and cleared all the
event logs.

That was 3 days ago. Since that time, "informational" log entries, a
couple of simple warnings (tracelevel...), my machine boots and runs
fast and clean.

If you get errors about a paging operation - especially if there is no
pagefile on the drive! - or Event ID 51, then check the simple stuff
first! Cables are inexpensive and simple to try.

Now you know!