make sure your walkman has plenty of charge it sounds like it might be the battery losing charge plug it into your computerclick start control panel administrative tools computer management device manager scroll down universal serial bus controllers it might be listed as a mass storage deviceyou could see a yellow question / exclamation mark? ! or a red X
you will need to update/reinstall drivers
right click to reinstall drivers
if you can see your usb drive but its not workingports (com&lpt) right click update driver http://download.cnet.com/sony-network-walkman/3000-2112_4-87383.htmlorhttp://download.cnet.com/sony-network-walkman-ev/3000-18493_4-71473.htmlhope it helps
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