Apple TV Gen 1 Stuck At Apple Logo
I have an Apple TV gen 1 which won't boot properly. Every time I plug it in, it just goes to the Apple logo and just stays there. I don't have the original remote, but I'm using a remote from the Apple TV gen 3, and it appears to work. For example, when I hold down "Menu" + "Down", it reboots. I mention this because I read elsewhere that if you hold down "Menu" + "Up", you can factory reset the Apple TV. But this does not appear to work. Any ideas on how I can get this back working?
Thank you in advance.
Apple TV