My 2008 Mac Pro died last week. I used it for work, so I needed to get a new Mac right away and settled on 2.8 Ghz i5 Mac Mini with a Fusion Drive. The Mac Pro started giving me a chequerboard pattern on boot and then a line pattern and finally just got into a cycle of constantly rebooting and not showing the Apple screen. Is it worth fixing or putting up on eBay? Our local Mac shop wants 78 Euros for a diagnostic.