I just upgraded from an Evo 4G to the newer Evo 3D. When I plugged my old Evo 4G into my Windows PC via USB, a dialog came up on my phone, I could choose "act as disk drive", and then I could copy files to and from. Now, when I plug in my Evo 3D to the same Windows PC, the charge light goes on, but I don't get the popup, I can't choose act as disk drive, and I can't see the phone from my PC. On the phone, under settings -> "Connect to PC", default connection type is "disk drive" and "ask me" is checked. These settings don't seem to be working. I tried restarting both PC and phone... I don't know why this isn't working. Otherwise, the phone is working perfectly and so is my PC and other USB devices. Any ideas?