SD Card for My Nikon Camera Wont Format

I
inserted my SD card into my Nikon camera, but it says memory card requires formatting. Then I connected the card to my laptop, and I got
the first error message:
I
clicked No, and I still have no clue to access the card. So I click "Yes" to continue, and
then I got another message:
"Formatting
will delete everything on the memory stick. Yes / No"
I
continue to click "Yes" to format the card, and I got the last
message:
"Formatting
cannot be completed."
Now,
my SD card still says needs to be formatted, but it is not able to be
formatted.