I am documenting my actions here in the event they might help someone else.
First, I have Windows Vista Home Premium Operating System (WVHPOS). This problem applies more to a Hard Disk Drive (HHD) more than to the Windows version, but the process might very slightly from version to version of Windows. But ,the guts of the solution should remain the same. I hope.
A little history. I had been getting frustrated in seeing this Event Id 7 in my Event Viewer. This was/is my C: we are talking about. YEA ! Reformatting the HDD seem to have little effect. The symptoms, beyond the fact of the Event Id 7 appearing in the Event Viewer, were that files seemed to disappear. Not files that I might have accidentally deleted. Most of them, I have never even heard of. At boot up, Windows would be asking for a CHKDSK to be run. Sometimes, Windows just ran CHKDSK on its own. Sometimes, after a CHKDSK, a folder would appear at the Root level (
C:\) named
found.000. The next time one appeared, it was named
found.001, etc. I hoped Vista wasn't planning on creating 999 of them.

They were access restricted, (what's new). If you don't have Vista, you probably don't know what I'm talking about. I think this
found folder thing is new to Vista.
That should do it for bring everyone up to date.

If not, Post me a query. Somehow, I was directed to
Mirskiy Solutions Hard Drive Test Pilot v2.6 at
Mirskiy Solutions - Software design, Web Site design, Marketing, Downloads, and more.. (If I'm not giving someone credit, I'm sure you will remind me.) I downloaded and installed this Pilot. First, I ran it against a
presumed good drive. Sure enough, no problems found.

Now, with bated breath, I ran it against my C: drive.
The Pilot reported an "error"...nothing more. It didn't try to fix the error (booo), it just reported it. It didn't identify the problem or suggest a solution. It just said "error". OK, I ran another CHKDSK (smart!), then reran the Pilot....Some results! "error".

Checking the Event Viewer, produced, sure enough, Event Id 7 listings.
How am I to resolve this dilemma?
Where's Peter Norton, when you need him?
I returned to the Event Viewer, and click on the
Event Online Help link, at the bottom of the Event Properties.
It sent me to ...
http://www.microsoft.com/technet/sup...disk&LCID=1033
This link sent me to ...
Help and Support That link sent me to ...
https://support.microsoft.com/common...208&showpage=1.
I contacted the Microsoft people (via their web email system), because the RESOLUTION on
After Formatting a Logical Disk, Event Id: 26 or Event Id: 7 Is Recorded in the System Log said ... "
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem. To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix."
I probably didn't enter they heavenly domain via the correct method, but any port in a storm. I am now awaiting their response in order to obtain the hotfix necessary to cure my C: drive. Hopefully!
Stay tuned, same time, same channel, for the next episode of this mystery of mystery.
Later...