New to site - WD 500GB external hard drive issues

Hi All,

Hope you can help me!!!
I have had my wd 500gb External Hard Drive some months now, which was re formatted to fat 32 by a friend, so I could download movies off friends.
Anyways it had just stopped letting me download saying: "Error: former volume not mounted".
I checked my hard drive and it says it has "no driver installed".
I did notice some of my last movies I download didnt have sound when watched on a friends computer using my hard drive? I am not great with computers in case you didnt know so if you can help..easy enough even a blonde could understand.lol. Still getting the hang of all the technic side...
Hope you can help I am lost with hard drive not working properly..
In case you need to know...I used a little Samsung N220 Laptop with
Windows *7 Starter..
Hope to hear from you soon
Renee
 
Back