r4 micro sd card adapter stopped working!!! ah!!!!

Hey, so all of a sudden now my micro sd card reader for my r4 has stopped working. It's one of those really small ones that come with the R4, and light up when you plug it in? Well yeah now it doesn't light up, and the computer doesn't recognize it at all. Any suggestions???? Thanks in advance.

buy a new one

They fail often, the ones you get with your flashcart are cheap, poor quality ones. Even the good flashcarts come with cheap readers.