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 NWZ-A816 won't charge
I had the same problem my mp3 would not charge.To fix connect the mp3 to your computer with the usb cable, go to Device manger open up portable devices you should see a small yellow triangle (this is telling you some thing is wrong) right click over walkman and choose up date driver .windows will use hardware wizard on the net to fix the driver.This worked for me i hope it fixes your problem
SOURCE: Sony Walkman NWZ-S615F problem detecting and syncronizing
I had the same problem. One day my Mp3 started acting weird and said it was not recognizing the files and that i needed to re download them. Try plugging it up to your computer while its charging and hit the power off. Then reset your mp3 with the button at the bottom and it should recognize it.
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: My Sony Walkman NWZ-E435F wont turn on at all even when plugged in with my USB
I had the same problem. For at least a week. Try pressing the reset button. The reset button won't delete your music, videos, pictures, etc. Just resets your system. If that does not work then i don't know what else to tell you.
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