My iPod doesn't work

So I posted about this back in december, but I didn't get a solution. The original thread is linked at the bottom of the text here, but here's basically what happened.

My iPod just stopped working randomly, mid-song. I tried resetting holding the menu and centre buttons together a number of times but that didn't work, and when I plug it into my laptop it doesn't even show up in my itunes, or the list of usb devices connected to the computer in my system information at all. I also tried booting up in disk mode, as someone suggested on the first thread, but that didn't work either, in fact it made no difference. The same error screen that appeared previously appeared when trying this, pictured below. That's the only screen I've gotten thus far.

Of course, I went to the url mentioned, but they no longer seem to have any support for this model of iPod, which is understandable.

On the inside, when trying to start it up, I can hear some kind of a whirring scratching kinda noise, so I think maybe it's a hard drive problem? But I don't know.

Link to original thread: iPod doesn't seem to be working