Chosen Solution

This is my first time writing a post here but I really need some insight. My laptop is about a few years old and its been working fine. However about two days ago, I put my computer into sleep mode and then once I waked it up the next day it showed my ROG logo and stating “preparing automatic repair startup”. From there, it would constantly turn off and on never going to the windows repair manager. So the first thing I thought was, “maybe my hard drive got corrupted.” so then I put in a spare hard drive with windows pre installed already. I thought this would’ve fixed the issue but it was still happening. So I knew it wasn’t the hard drive but rather a computer issue. But I don’t know what it could possibly be. I was considering on disassembling my laptop but I don’t want to do that unless it is absolutely necessary. Any insight on a possible solution is appreciated. Also I apologize if there are any grammar issues, I’m currently typing this on my phone.

Hi @jaehwa I suggest you to try fresh clean install on your spare hard disk and see if it helps. are there any BSOD or any errors or codes?