My Samsung mp3 player yp-u3 ver 1.12 doesn't connect to my pc. says disconnect and only charge. how do i get it working? to connect to my pc i mean :)

SOURCE: Samsung YP-U3 MP3 Player Problem connection

Found the solution on another site (http://www.everythingusb.com/forums/showthread.php?threadid=11238). To quote user AFHavemann :

"* Plug in the player so the USB bus can see it.

* Once it’s recognized (i.e., the device screen reads "Charging" and "USB Disconnected"), go to the Control Panel and click "System"

* Choose "Hardware" then "Device Manager" tab.

* Look for the name of your device under “Portable Devices” in the list

* If the name of your player is under “MTP Device” then the correct drivers are probably loaded

* Right-click on the name of your device and click "Properties"

* Click “Update Driver”"

Then follow the prompts from there. The computer searches for the driver software, etc., and reinstalls/resets information related to the device, which fixed things such that the computer will now recognize the device. I'm not sure what causes the problem, but this solution seems to reset whatever's gone wrong.

SOURCE: samsung YP-U3

go to my computer> properties>hardware > device manager >universal bus driver>right click on it> update driver>
then1 
1.yes this time only> next 2.choose advanced option>next 3don't search i"ll update from........>next4.click on show campatible> next> next 5. now it updated then restart you computer 
Then try to format your drvice sir hope this is helpfull or if problem still please type in comments
regards
golu_fixya

SOURCE: how do I charge Samsung

The player needs to be charged via the USB connnection on your PC. If it doesnt fit, try the USB ports on the back. If its not working/not charging, please test the MP3 player on another PC.