PM from the OP. sorry don't PM me
"The Memory Cards that I purchase are referred to as ScanDisk sd Memory Cards that I purchase from Gloria Bazar here in Ozamiz City, Mindanao, Philippines. These are the only Memory Cards that I have ever seen for sale here in the Philippines and, thus have no other option than to purchase these.
When taking photos, I get some undiscernable files on the ScanDisc sd Memory Card that can't be deleted and, have nothing whatsoever to do with the photos that I have taken recently. I experienced this with the last ScanDisk sd Memory Disk and, thought that since I can't delete whatever undiscernable files from the ScanDisc sd Memory Card, I would go ahead and purchase a new one, which I formatted like the previous ScanDisc sd Memory Card to use with my camera. No problems for a couple of photos that I took until just recently (the past week) and, now I am right back to where I started with the former ScanDisc sd Memory Card as I can't delete these unknown files that have nothing whatsoever to do with photos that I took. I can delete the photos that I took but, even then noticed that NOT all the photos that I took are on the Memory Card, which is heartbreaking for me, as I like to keep some memories of when my wife and I travel to places that we haven't been to in over 20-years time.
So, whatever suggestion you might have will be appreciated - other that to purchase a new Nikon Camera as they don't sell this camera or any 35mm Camera that I am aware of in Ozamiz City (population 15,000) and, a farming community, which would mean traveling to Cebu or Manila, a full day's journey north of our current location.
Paul Vollmer
Retired U.S. Air Force / Disabled Vietnam Era Veteran"