I have an Apacer AC202 500GB external HD. As in one point of time my drive stop working properly I decided to reformatted. I wanted to do it through the device manager and not the quick format. Not along after the formatting process start its seem that the HD follow asleep and a message formatting cannot be complete pop up. If I do a quick format there isn`t any problem and the HD is ready for a use in a seconds but I`m sure that I`ve got some bad sectors and I`m afraid that the quick format will not fix them. I hope that someone could give me an advise of what to do. By the way my laptop is using windows 7 as OS.