I bought a 64GB Sandisk for my GoPro Hero 3+ and it works fine.
However, when I either plug in my GoPro directly via a USB cable or try to access the drive by using an SD-card adapter, all that comes up is
The disk you inserted was not readable by this computer.
The options presented are
Eject. When I select
Initialise it comes up with a program I have never used or seen before.
I am not very good with computers so any help is great! I have recently had my laptop updated but I am not sure which update it has.
(My laptop reads other cards and this card works on a Windows computer.)