Downgrading from windows 10 to windows 7 repair loop

Tacosnipers

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Oct 2, 2015
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I downgraded from windows 10 to 7, and now when it tries to startup it crashes, and goes into a windows repair loop for not starting up correctly. I used cmd from a startup disk, and checked the c drive, all the files are still there. Please help
 

Tacosnipers

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Oct 2, 2015
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There is an option in windows 10 setting to revert back to windows 7 in the first 30 days of installing windows 10
 

Tacosnipers

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Oct 2, 2015
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Can i still use the same serial key when i install again?