Carl A Loc: Homosassa FL

I have a Nikon d5100 when I plug in a 16GB card it says no SD card inserted with a 8GB card it's okay
so what's going on is the card bad ?

ddetloff Loc: Fair Haven, MI

Is the card locked? Once in a while, I'll slide the little switch on my card without noticing.

Carl A Loc: Homosassa FL

It seems to be a intermittent problem on the 16MB card I turned the switch on and off sill the same
problem

RWR Loc: La Mesa, CA

Is the card one that has been tested and recommended by Nikon? (See your user’s manual)

Carl A Loc: Homosassa FL

It's a SanDisk Ultra

RWR Loc: La Mesa, CA

There’s more than one type of Ultra card. Make sure it’s one that Nikon recommends. If it still isn’t recognized by your camera, I would toss it.

Tom DePuy Loc: Waxhaw, N.C.

The following SD memory cards have been tested and approved for use in the D5100.
Cards with class 6 or faster write speeds are recommended for movie recording.
Recording may end unexpectedly when cards with slower write speeds are used.
SD memory cards
SanDisk
Toshiba
Panasonic
1 GB, 2 GB
Lexar Media
Platinum II
Professional
1 Check that any card readers or other devices with which the card will be used support 2 GB cards.
2 Check that any card readers or other devices with which the card will be used are SDHC-compliant. The
camera supports UHS-1.
3 Check that any card readers or other devices with which the card will be used are
SDXC-compliant. The camera supports UHS-1.
Other cards have not been tested. For more details on the above cards, please
contact the manufacturer.
SDHC memory cards
4 GB, 8 GB, 16 GB, 32 GB
4 GB, 6 GB, 8 GB, 12 GB, 16 GB, 24 GB,
1
32 GB
4 GB, 8 GB
4 GB, 8 GB, 16 GB, 32 GB
4 GB, 8 GB, 16 GB, 32 GB
2
SDXC memory cards
64 GB
48 GB, 64 GB
—

jerryc41 Loc: Catskill Mts of NY

If it's just this one particular card, try it in another camera. If it works intermittently, send it to Sandisk. It may have a lifetime warranty.

Carl A Loc: Homosassa FL

Problem with the d5100 and the 16 GB SDcard was dirty contacts after cleaning them with alcohol
it was okay

lamontcranston

Was going to recommend trying to format the card in the camera but I see you have fixed the problem. Great idea to clean the contacts.

charlienow Loc: Hershey, PA

I believe I would still format the card in the camera. Doesn’t hurt and might help

Tim Stapp Loc: Mid Mitten

After downloading and backing up, I always format the card in my D5100. Knock on wood, no problems.