Problem recognition device

Hi, i’ve a problem with a sansa fuze and i can’t resolve it. In the device manager show me the device with a conflict. The mesage text say “device can’t begin”.

I can’t install the Best Digital Music software. When the instalation comes to the end throw a problem and can not finish the instalation.-

Oh, sorry if there are spelling horrors, i’m from argentina and i does not speak english.-

Thanks for your helps.