INSTEAD OF DISPLAING CONNECTING USB SONY WALKMAN SHOWING VERBINDEN M.USB. WHY?

SOURCE: Sony Walkman connection problems

I had a similar problem, mine wouldn’t turn on unless I plugged it in the computer and then it still wouldn’t work!
I found this on Sony’s trouble shooter -
Cause:
Battery is 100% discharged. Therefore, PC's USB with 5V/500mA set up has not enough power to start up the charging process because loading current is greater than the set up, therefore USB is disabled immediately due to sudden current load.
Remedy:
Battery must not be discharged 100%
If it happens then the supplied AC adaptor must be used firstly because it is providing 5V/800mA power. After a couple of minutes the unit can be connected to PC without problem then it can continue the charging during file transfer, etc.
So I bought a USB adapter charger! Plugged it in and now it is working!
HOPE IT WORKS FOR YOU!

SOURCE: Sony Walkman NWZ-E436F will not connect to PC or

First reset yours by the Back button;

If not solved;

Reset again by the button, the On the Computer by Fat32 Format, and then Copy the Initial Files that were on your MD when you Bought;


Good luck

SOURCE: Sony walkman is not being recognized by XP as a portable device

I remembered that I had another problem with Windows Media 11 that seemed impossible to fix until I found somewhere that uninstalling or rolling back WM11 to the previous version then reinstalling fixed the issue. I decided to give that a try with this problem we're having and sure enough it worked. The Walkman is now recoginized as a Portable Device under Device Manager and in My Computer it is displayed as a Walkman and not a removable disk.

All you have to do is use add/delete software, delete or rollback WM 11 and then either use the Sony disc with WM11 or download a new version. All together it only took a few minutes and I'm back in business. No music or playlists were lost. Try it and let me know if it works for you.

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

SOURCE: Sony Walkman not connecting to computer

I had a similar problem (my computer uses Windows XP) - Sony Walkman beeps a couple times when I insert the USB Cable that connects it, like it is connecting, but it does not charge or is not found by Windows Media Player. In my case, the way I fixed it was to:
1, Go into Control Panel
2. Double Click 'System' ICON
3. Select Hardware Tab
4. Select Device Manager
5. Select 'View' at the Top
6. 'Devices by Type' AND 'Show Hidden Devices' should be selected
7. 'Scroll down to 'Portable Devices' and open it up.
8. My Sony Walkman was there with and Exclamtion point ( ! ) in a yellow circle,
9. Right Click on this yellow exclamation point.
10, Select 'UNINSTALL'
11. Once the computer says 'Device has been Uninstalled, Disconnect your Walkman's USB cable then reconnect.
12. At this point, my Walkman was recognized by my computer, started charging, and was recognized by Windows Media Player

Hope this helps