E106 Startup Error Code Issues

I’ve had this issue for about 3 months. I’ve gone to an electronics repair shop in which they told me that it sounded like a hard drive issue. They said they tried 3-4 different hard drives and it didn’t improve or change. I’ve also done everything the Microsoft support website told me to do for all the startup E codes, and I just replaced my HDD connector cable at about 3 P.M. on 1/3/2021. When I did a hard reset of my Xbox it took me to the green screen of death and then for the next 2 hours it wouldn’t move off of a black screen. I’m nervous to turn it off for the night. Any help would be greatly appreciated.