ipod classic not connect the computer and not load, what do I do?

Have you tried plugging the iPod into a different USB port on your PC? Preferably a high powered USB 2.0 port on the back of your PC and not a USB port on the front or via USB hub.

With the iPod still connected to your PC, try a hard reset. To do this, press and hold both the Select (Center) and Menu buttons together long enough for the Apple logo to appear.

Otherwise, see this article for more troubleshooting suggestions.

iPod not recognized in 'My Computer' and in iTunes for Windows

B-rock