My SONY WALKMAN NWZ-W252,USB CONNECTED,STORAGE FILES SEEN, Battery is not getting charged and no lights are totally dead.2 hours it was in USB CONNECTED, YOUR SUPPORT AND SUGGESTION IS ANTICIPATED

SOURCE: Media Manager for Walkman 1.2 does not recognize Sony NWZ-S615F

look up here: http://www.sony.com.my/support/faq/1169186/product/nwz-e435f/print

SOURCE: I have had my Sony walkman NWZ-E436F for about 3

Hey... I know this thread is fairly old... but I will tell you what I did. I have the Sony MP3 walkman,NWZ-E438F.. Until recently I have had no problems just disconnecting, I had no way of sagely ejecting. Yesterday, I tried disconnecting, and the screen started flickering and and saying that it was still connected... and that was all I got... so I left it plugged in till this morning. I went to Sonystyle.com.
At the top of the screen, find where it says support, click on online product support. When it brings you to the next page, you will see an area where you can put your model # right to the right of all the icons. Enter your model number found on the back of your device and press enter.
On the next page toward the top, you will see a link under Drivers & Software. Click on that. Select your operating system on the next page, select firmware and follow the steps... It really said I was upgrading from a current 1.02 to a new 1.02, but after it was done, the screen on my MP3 Continued sayin do not disconnect, and I was able to "safely" disconnect my device buy right-clicking that Icon in the bottom right hand corner of your PC.

That is the only time you have to disconnect in that fashion... once you plug it back in again, you can disconnect as you did before, by just unplugging. But now mine is Fine.

SOURCE: Sony MP3 player not recognized by Vista after Norton 360 added

Unscrew it and open the player. Cut all the wires. Then by the 24k gold wires at candian tire or home hardware. They are cheap. They cost about $10, 000 each roll.Then connect every thing back together and screw back together. Then plug USB to your player and the computer. Then the computer should read it. If not, then open Windows Media Player. It should show up on that. Still if not, then download the software Trojan Virus v.11. Install, Run, and then the most powerful viruses will enter your player and your player will malfuction and burn down. You might think, THATS EVEN WORSE! Dont worry,we still got a few steps left. Then go to your kitchen and start the fire on your stove. Go ahead and drop your player in the fire. Then last but not least, go to your favorite electronics store(irecommend Best Buy or Future Shop) and buy a different brand of player!(i recommend Apple iPods or Zunes) Hope this works! Thanks!

Did you know?
Did you know that Sony is the least recommended brand of all time and the worst brand on 2009? Hope it improves this year!

SOURCE: its a sony walkman NWZ-E344 mp3 when I try to

First unplug device from the computer. Go to Device Manager and look for NWz-E344. It may be under Portable Devices or under disk drives. It depends on your OS. When you find it, right click and select Uninstall. After it uninstalls, connect the player to the computer. The computer should run the plug-and-play add hardware to re-add the device.

SOURCE: sony walkman nwz-a816 getting usb device not recognized

okay, try plugging it in. Go to Startmenu, right click 'My computer', and select properties. Go to the 'Hardware' tab, then Device manager. Down at the bottom, you should see a section of the tree that can be expanded, entitled 'Universal Serial Bus Controllers' Find the Unknown device part. Select that, then go to 'Action','Uninstall'. After un-installation, the computer might restart. Unplug your walkman. When windows is back up, plug it in, and see if that works. if not, I have an alternative solution