+ 4 Votes the first thing I do Sue T April 24, 2013 at 2:00am PST is try the flash drive on another computer. I have had flash drives that tell me that work perfectly fine on another computer. If it works on another computer then backup those pictures immediately just to be on the safe side. Whenever you have any data, pictures, etc. that you don't want to lose you should always make sure you have that data, etc. in at least 2 different places in case one fails.