How to fix corrupted memory card (Sony M2)?

Hi I am just listening to my music using may P11 sony ericsson phone, but all of a sudden error appear that my memory corrupt D:. How can i fix this? I tried to format the memory card thru the use of computer but still no good happen, try to format it using the phone itself but error appear as "formatting failed" and as of the moment i cannot use my mermory card.

Please assist to help me on this.

Thanks