After initail connection to computer my deice is now not recognmised by my computer although at first i have charged it and placed music on the device the computer now does not recognise the device

Try doing a restore back to a previous date when it was ok.

go to control panel ahd see by sond open and click the mixer sund and click in the device marked with X:and now is fix it .Otherwise you must go propertities from sound and reinstall the driver can be corrupted.God bless you

The Samsung player is charged up by thus USB cable when you connect it to your computer.
ALSO
When you connect the MP3 player to your computer with the supplied USB cable then computer detects the player as an external storage device or a Removable disk, you can then view the folder on your MP3 player. Open the music folder and create a new folder on the player exactly the same way you create a folder on your computer's hard drive. To organise your music, make a folder name with the name of the music album and place the album's MP3 files in this folder, then copy the mp3 files from the computer into this folder.
You will then be able to select the music you want to play by the music album folder. To delete a file from your MP3 player, connect the supplied USB cable to your player and then plug it into the USB port of your computer.
The computer will detect your player then click on this device to view the files, you can then click on the music file to highlight the file and then press the Del key to delete the file off your MP3 player.

The most likely answer is that your husband formatted it NTFS, which is probably the default for your computer. In general, MP3 players use FAT32.

Connect it up to your computer, and right click, and choose "Properties...". What file system does it say? If it says NTFS, then this is the problem, and you should be able to reformat it again, but using FAT32.

MP3 players need the music files converted to mp3 file format before copying to your MP3 player.
1st - You need to convert your CDs to MP3 musicfiles.
You can do this using Windows Media player and Rip the CDs - Media Player willcreate a MP3 music file for each music track.
There are also Freeware CD RIP programs on the Internet that add the musictitle and album title to the mp3 file automatically.
OR
Download MP3 music files from the Internet to your computer, some sites willcost money to download these music files.
2nd - connect your MP3 player to your computer using the supplied USB cable.The computer will see this player as an external storage device, Just copy theMP3 music files from the computer's hard disk to the MP3 player. I suggest you create a album/title folder for eachCD so you can place the MP3 music files by that artist into that folder. Thencopy these folders to your MP3 player and you will be able to select and playyour MP3 music by selecting the album you wish to play.
NOTE - When the USB cable is connected to the computer, it will also charge theMP3 player's battery.

Take back to place where it was bought and request a replacement. If your computer doesn't see it when it's connected, then there is something faulty with the device.

I would try downloading the driver for the ipod on your computer and see if that works

I would suggest that you reformat it.

To format it open up a My Computer window, and right click on theremovable storage deice that you using and then click format.

i tell you connect to the computer your device
and right click on your device and format it i have the same prob now it fixed

yea, that happens to me too. it just keeps restarting. no solutions yet. good luck...