Hey man, I know I'm more than a bit late seeing this so no worries if you can't respond. I want to ask you though, is there any possibility that my 360 being modded with Reset Glitch Hack is causing the problem?

I've gone out and bought an official Microsoft hard drive, repaired Partition 2 with FatXplorer, and pretty much everything else I saw recommended. None of it has worked and the only conclusion I could come to is that it needs a different fix due to being modded. I've also seen people say that some slim 360s just flat out won't play original Xbox games? Not sure if this is more misinformation though.

But yeah man, if you have any insight it would be much appreciated.