No Boot Disk Has Been Detected Or Disk Has Failed

Aug 25, 2015

So, after about 2 weeks of experiencing Windows 10 I've decided to revert back to Windows 8.1, since I was more experienced at it. So I followed every step to downgrade the system, waited for about a few hours, then I noticed that when Windows restarted, it somehow went to an "automatic repair" loop. I've tried literally everything there was so I can get it running again, but nothing seems to work. But, there was only one option, in which I feel like an idiot to try out.

I went to Command Prompt and typed in diskpart.exe, then enter. I then typed in LIST DISK, then SELECT DISK SYSTEM, and finally CLEAN. Since I thought at the time that CLEAN works like resetting the PC, I rebooted it again, and I came to an error message saying: No boot disk has been detected or the disk has failed.Is, or will there be any other way to start my PC in a condition like this? If I'm missing any other details then feel free to ask.

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