lost memory.

..FRUST!

how come all of a sudden my m2 memory card cant be detected?!
not even on pc,
not even in my phone?!
ok.. here's what i did then it became like this..

i wanted to upload pic to my lappy..
so i just put the mmc to my mmc reader.
it was ok.. until it went "not responding"
then i close the window.
of course..there was a small pop out
"restart program.. etc etc"

so i pressed the 2nd one.. close program.
then it say wanna check microsoft.. and loading.. then i press cancel.
usually it's ok.

i got no idea why this time..
my mmc couldnt be detected.
not even on my fone.

any idea?