have you tried on other computers?

 

Try deleting the drivers and install them again or try another computer or try a factory reset.

 

has anybody found a cure for this? All the searches that come up are from people who have never had this problem. Not on solution fixes it. Nor have I have seen the origianl poster reply with a fixed. Not trying to be rude but this is getting old. I'm tired of not being able to use my phone properly. It's not the PC. It's not the cord. My boss and I have the same phone EVO 4g. I charge them both at work. Her's mounts as a disk drive mine does not. Nor does it on any other PC i plug it into. Unistalling and reinstalling the drivers will not work. Yes debugging is checked. Yes i have disk drive checked for when i plug into USB. Searching the web this seems to be a very common problem among Android phones yet I have not seen one true solution. Any body that has ever had this problem actully found a solution?

 

You said your boss's phone mounts, but weren't clear if you tried using her cord and computer. If you have, the only thing left would be to try a factory reset, other than that it would be a hardware problem. Different pins inside the USB plug are used when charging vs mounting as a drive, so just because it charges does not mean it isn't the cord or port on the phone.