Hi! Last night, my Samsung N150 was still working properly. But when I connect a music player, it stopped working. When I restarted it, the taskbar was already stretched upward and the start button failed to work. The names of the desktop icons weren't appearing, and I can't see the text in the windows explorer. However, I could open some programs by clicking the icon. This is the first time that I had had a problem like this with my netbook. I have many important files here which I haven't backed up yet, that's why I don't consider reformatting as of this moment. Please help me. Thanks.

My volume ain't working any more and i don't know why this has happen cause i still played a song on it this morning and it's gave volume but ceased all a sudden what can i do about it?

Try running you're antivirus. Scan you're drive and you're music player because i'm assuming that you're music had a virus that attached itself to you're netbook. If that didn't worked or you're antivirus didn't run at all ( because some viruses and specially malwares can actually do that ) try running it in safe mode (pressing f8 during initial boot) or run you're system recovery in safe mode (this will revert you're system to the date you're netbook didn't have any problems).
To prevent this kind of problem in the future i would suggest turning off you're autorun. Try running this procedure http://antivirus.about.com/od/securitytips/ht/autorun.htm
If you're having a hard time understanding it the easiest way to do it closing the autorun pop out once you insert you're music player. Then just double click you're computer then right click on the drive then select explore. And make sure that anything you insert in you're netbook in the future to scan it first with you're antivirus before doing anything.
Hope this helps. Good Day. ( :