Why is my SD Card not mounting - Galaxy S5

[AC Question]

I unmounted my SD card and put into my laptop to pull over photos. When I put the card back in my phone, it's not recognizing it. I'm not getting any errors. When I go into Storage, the "Mount SD Card" option is grayed out and I cannot click it. Any ideas? I'm not SD card savvy. haha

 

[tube517]

What phone do you have . What is the brand name of the sd card and where did you buy it?