SDHC Data card not recognised by my PC

Registration date
Tuesday March 29, 2016
Last seen
March 29, 2016
- Mar 29, 2016 at 12:24 PM
Can anyone help please ..
I have a 16GB SDHC memory card that my PH Pavilion laptop ( purchased within the last year), running Windows 10, won't recognise.
When I insert the card in the appropriate slot, the PC says 'Insert a disk into SDHC (F) , and then asks me to formatt the card.
When I say cancel I get this message
'The file does not contain a recognised file system. Make sure all required file system drivers are loaded and that the volume is not corrupted'

I can't see any images on the camera either, which says 'Insert SD card again'
It was working fine until 4 days ago.
The card was formatted originally in the camera as instructed (Panasonic Lumix DMC TZ40 )

Any ideas how to rescue my images PLEASE