Welcome to Android Central! Swipe down the notification panel and tap the USB option -- make sure MTP or File Transfer is selected. Now open Windows Explorer and look for the phone in the device list. Do you see the associated SD card?
Thanks for the quick response B. Diddy!!! I dont have any USB options for my samsung galaxy s5 in the notification panel or settings!!!! so strange there is nothing there for USB? any ideas on how I could find the USB section or turn it on? Wish I could post a screenshot here for you to see?