Computer doesn't notice MP3 player

The power and data wires inside USB connectors are separate, so it's possible you have a bad cable.What operating system are you running on the computer?

hi

your mp3 have the if gurantee perid you contect the service center.
http://kb.sandisk.com/app/home

is it unlocked?

Sounds like the internal battery needs to be replaced.

Hope this helps. Good Luck!

If you are using a USB connector [that connects extra ports to your computer] it sometimes doesnt work... so if possible hook the USB sansa cable to the main ports in the back of the server. It might also work to hook it in, and then go to 'My Computer' and see if it shows up there. Good Luck =]

There are two connection settings in USB: MTP and MSC. For some reason MTP is the default, but it doesn't connect properly on all computers. Select MSC and plug the player in again, the computer will recognize sansa e250 but not show the driver just yet. It is installing recognition software (just basic drivers - nothing heavy) and it doesnt tell you what its doing until its complete. WAIT FOR IT. Once it is complete you will see both the sansa e250 and the removable memory slot in your "my computer" now you're good to go.

Take the screws out of the back, take the battery out then put it back in again. This worked for me.

I had the same problem - the player needs to be unlocked (the little switch on top) to be able to charge - pretty stupid if you ask me but what can you do

try what is described in this link:
http://www.yjzone.net/showthread.php?t=101

that happened to me...what i did was a just left my Sansa on until the battery ran out and then charged it.