You helpful folks here at macrumors wanted an update so here it is. To anyone new to the scene, here's a link to the drama: https://forums.macrumors.com/threads/215736/
So today I took my imac back to the Apple Store for the fourth time. After waiting in line, I asked to speak to a manager, which I was told there wasn't one. Blah. I then asked for the mac genius I had in the past, and fortunately he was there. After turning on the imac (which didn't boot up) he believed me that it was broken. Unfortunately, he didn't know what was wrong with it. So he suggested another motherboard replacement (my third one
He told me, he honostly didn't know what was wrong with it and he'll call me next week. My questions concerning a replacement, refund, temp machine were either ignored or given a negative response. Thank you for all your suggestions, but I didn't get anywhere with them and I was quite serious when I asked them (I didn't throw a fit because I'm not that type of person) Anyways, if anyone has any advice, I'd appreciate it 
So today I took my imac back to the Apple Store for the fourth time. After waiting in line, I asked to speak to a manager, which I was told there wasn't one. Blah. I then asked for the mac genius I had in the past, and fortunately he was there. After turning on the imac (which didn't boot up) he believed me that it was broken. Unfortunately, he didn't know what was wrong with it. So he suggested another motherboard replacement (my third one