Why can't my computer recognize my Motorola Karma when attached to a USB cable?

[youngjobber]

I have a motorola Karma and I tried attaching it to my computer with a proper USB cable. It says there's a Digital Still Karma or USB Mass Storage device attached, but when I try to access it on the computer it says it'sthat the phone is not attached.

 

[noemybanda]

well i had the same problem with my lg and my emachines laptop,and u wana know wat i did RETURNED THE LAPTOP!!!!!!