I've been using a memory stick for ages without problem, but now when I try to access its contents it comes up not as 'Kingston' (the make of stick), only as 'removable disc', and if I double click to open it, a window comes up saying ' has to be formatted in Drive F'. If I click to say I want to format it, I'm warned I'll lose everything on the stick......Help !!
Every now and then they corrupt. Memory sticks are ideal for data transfer but NOT as backup devices.
Sorry I can't be more help but I think you need to reformat it. You could try Scandisk but I don't think that will work.