MP3 Player Utility 3.68 is no use for Rockchip players.
You need to install the
rk27usb.sys driver on the other computer. you can download here:-
Download
Just install the driver from the application's folder - don't use the repair tool it's for DEAD players only and your player is ok your pc just needs the driver.
If this doesn't work then there is a problem with your pc usb socket - try another - good luck, hope this works.