Reset all the time Ipod Classic 80gb

Hello,

I have a question and I hope one of you can answer me.

I got an iPod classid 80GB for a long time already,

When i had my iPhone 4s I had to update iTunes so I did.

Later I wanted to put new music on my iPod classic, connected but it took a while before it connected to my PC

and i had to reset all settings and all the music was gone.

So I did reset everything, everything was gone so I connected again and I had to reset it again, again and again.

Everytime I connect my iPod classic to my PC it has to be reset because it's in 'Reset modus', and can't put any music on it.

I hope somebody had this problem already or know this problem that can help me out.

Thanks,,

Mats