Ipod Classic Won't Sync with ITunes - Windows 7

I've been having some problems syncing my Ipod up with my Itunes. The last time I had a successful sync up was probably 2 and a half weeks ago. I've tried multiple solutions already but havne't had any success yet. I tried reinstalling itunes, switching usb ports, resetting my ipod by holding in the center and top button, launching itunes in safe mode, switching computers to see if it will install on my PC instead of my laptop, and I have tried switching USB cables.

Everytime I try to sync it up the same thing happens. On the Ipod's screen it will read "Connected Eject Before Disconnecting", however on my computers screen it will not appear under devices. I opened up My Computer to see if I can at least see it there and my Ipod does appear there for about 20 seconds and then it will disapear. It's as if the Ipod disconects itself....however it continues to receive electricity from the computer cause I can see it charging.

Has anyone had this problem and knows of a way to fix it?