SanDisk Extreme 64GB 3.0 USB not recognized by multiple PCs

I had this flashdrive for about 2 years and it has served me well until recently where it hasn’t been recognized by multiple pcs including my work pc and my home pc. All that I get from the flash drive is that the blue led light is permanantly on when connected. The PC doesn’t even show the message that the device has been undetected. Help?