What means when sony nwz-b142f mp3 player shows pnp problems

SOURCE: i just bought a sony mp3 walkman nwz-b142f and when

hello i am also using this player only
in order to execute equilizer pls off bass and then try to use equalizer
i am sure now u can find the option
i have read the softcopy of manuall which is available in player.....
its working enjoy!!!!!!!!!!!!!!!!!!!!! hearing songssssssssssssssss.......

SOURCE: HELP ME PLEASE with my "sony walkman NWZ-B105F MP3 PLAYER."

make sure your downloading it to the right folder on the mp3 player its usualy the music folder or you can try and use windows media player here are some instructions for that option.
--**Windows Media Player**--
If you have a large playlist to transfer, you may prefer to do it from your media player, such as Windows Media Player. Once your MP3 player is connected to the computer, open Windows Media Player. Click on the "Sync Music" tab. Drag songs that you want from your Windows Media Library over to the "Sync Music" column to create a playlist. Click the "Begin Sync" tab at the bottom once you have all of the songs on your playlist. This action will sync all of the songs to your MP3 player with one click. Disconnect your device once songs have been transferred by clicking on the "Safely Remove Hardware" icon in the bottom-right side of the desktop tray.

SOURCE: sony nwz-b133f(b) mp3 player EQUALIZER CANNOT EXECUTE!

turn of the BASS mode and YES! you can access

SOURCE: When i put my sony nwz-b142f on my laptop to

nwz-b142f driver

SOURCE: i have sony mp3 NWZ-B142F

i'll be using this mp3 sony walkman about 1 month..i use it with care..today..on thaipusam day...i reopen back the mp3 player listened to the songs..cannot switch on off...and and cannot reset...all the button not functioning...do i need to throw this into the rubbish bin!!!hahahaha....i handle with care the mp3 and put in mp3 cases...and bringing where i got....i never been so brutal to mp3 and be kind to the mp3....so can u help me solve the problem...or i need to go to the center for a mp3 doctor diagnosis..hahaha.hope to hear from the listener of my problem..thanks for ur helping hands..c u soon..thanks...