Windows Server 2012 R2 Terror

It was 3 weeks ago when I made the dumbest decision to downgrade my computer from windows 10 to windows server 2012 R2. I did the installation and it worked. I made a domain and my website was running on it. However, this came to an end. I was going to update and enable the update feature and it said you were 108 updates behind. I let it run and after I came back in 4 hours, it said updating at 3 percent. I freaked out and let it run overnight and I went to sleep. The next day I woke up in terror. The PC was still updating at 3 percent. When I got back from school, I searched up on Google how to reset the C drive in cmd prompt. When I restarted the PC a couple times, it thought I might have broke the hard drive so it said diagnosing your PC. I then went to the troubleshoot page and pressed on CMD repair mode. I then typed in the command to reset the drive. It then said now resetting at 19 percent, I wasn’t patient enough so I shutdown my PC and it was the dumbest thing I ever did in my whole life. I booted it back up and it said fixing your PC, then it shutdown. This happened forever as a loop then I found out I deleted the repair files. I then shutdown my PC. Got my USB drive and put windows server 2019 on it so I can upgrade it again. It didn’t work so I opened up my computer, took out the hard drive, and it was heavy but gladly it used a SATA connector. I got distracted by the ram and took it out to look at it. When I tried putting it back in however, it didn’t snap in. I booted the PC with the ram loose and the PC started beeping but the screen didn’t come on. I was like horrified. I pushed the ram in and gave up hope. The ram still didn’t work. I then tried this for the past few days and I concluded my PC was dead. Now, I extracted the ram and the hard drive and man the hard drive was heavy. I ran to my families old computer and I plugged it in. Now, I am opening it and putting a new hard drive in it. I am now running Ubuntu OS from Linux corp. Now, I am gonna tell my dad to buy me a hard drive connector to USB so I can plug it into my dad’s computer. After that I will wipe it and then plug it into my family’s computer so I can install windows server 2019. Worst time in my life. Maybe my friends were right. They say I’m not a computer expert and this happens. They were right, I’m not good at computers.