Blue screen on start up

Ok so ima just ramble a bit about whats happening since idk how to make sense of it. Some times when turning my pc on it blue screens. When that happens sometimes it will restart and work just fine. Other times it doesnt. Sometimes it will stay on the blue screen and say 0% complete or x% complete (x being some random number) Uh... sometimes it will go into repair mode but trying to run repair doesnt get me anywhere... turning it off and on quickly causes it to blue screen but turning it off and giving it a few mins can sometimes fix the issue and other times it will still blue screen. When left off for a while it will bluescreen after i get to my desktop. If i turn it off and on with out much down time it will bluescreen before reaching the login prompt. I have some videos linked to my google drive of whats happening of anyone per request would like to see them i will look into how to get those clips to you. Oh and a few times it got caught on a blue screen loop and also one time it disabled my task bar and my pc just froze on me.

For specs i have. Rtx 3070 founders 5900x 6 core Gigabyte B550I AORUS PRO AX Mini ITX AM4 Motherboard Corsair Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory Western Digital Blue Mobile 2 TB 2.5" 5400RPM Internal Hard Drive FSP Group Dagger Pro 650 W 80+ Gold Certified Fully Modular SFX Power Supply

My theory is that the copy of windows i have is a bit jank since its a proper copy with a key or somethin that was faked to make it seem like it was legitimately activated... but it wasn't?... idk how to explain it but the person i had do that said he has done it plenty of times and has had no weird results. Though they suggest starting with a fresh windows install. I think it may be my hard drive... it always ran fine when i first put it together but after some time game started to load slower and now this is happening... i think so application are failing to start in start up and its causing crashes. Because my hard drive doesnt load them as fast as it used to... again... all just my dumb theories... but over time since i first built it... my pc loading things slower has been the only changing factor. Any help would be appreciated. If you need any clarification on anything please ask.