It is possible that all you need is a new cord. There are two different connections: charging and data. A bad cord could be giving you the data connection without charging.
If you have another cord with the mini-USB connection, try it with the laptop.
Open Windows Explorer (Computer or My Computer). Connect the USB end of the chord and hold down the << while connecting the mini-USB to the computer.
If it pops up in Windows Explorer, right-click on it, Properties, and Error-Checking. That might fix the 30MB message, which is sometimes a sign of a corrupt file that Windows can fix. It’s worth a try.
