4gb sandisk micro SD hc card,

hi ,

I am having a problem with my microsd card,last night I noticed that my phone does not detect the memory card so I removed it and tried it in my computer but when I try to copy some thing from it ,It  says  parameters incorrect,pls help me all my important files are in that memory card.

hoping for a quick reply relying on you 

thanking you

keshav

Most likely the card is defective. You should contact SanDisk for a warranty replacement. Unfortunately, there’s nothing to be done about retreivinig your files fom the card, unless you want to pay a professional data recovery service a few hundred dollars to attempt to get them off the card (which isn’t guaranteed).

how I apply for replacement

http://www.sandisk.com/about-sandisk/contact-us/