Hi a newbie here, i have recently installed windows 7 upgraded from vista and all running well so installed as a full new install and removed vista, now the problem external hd worked fine at first but now when i turn it on it shows in my computer but says it has to be formatted before i can use it, like a fool i did this wiping all my stuff off in the process, re started pc and then ext hd but just keep getting hd must be formatted anyone know the answer please thanks skiddly:idea: