Memory card not reading

Hello,
My computer quit reading my memory card from my phone. I wanted to print some pictures off of it. I have printed them before, (in fact, just yesterday). It reads just fine in my phone, so I know it's not the card. It also reads just fine if I put it directly in the printer itself. (I don't want to print them directly from the printer because the quality of the photos is not as good & it doesnt have the right size). I have unplugged everything & plugged it all back in & took the memory card out & put it back in as well. I have also moved the usb cord that comes from the printer to another port. Neither of these things worked. Can someone please help??!