No, that's not entirely true. If you're using your Electrum wallet, by default your profile is stored in the Windows users Roaming directory and you can clean it up with a clean reinstall of Windows. But you can definitely restore it with a seed. My problem is completely different. Please read my answers carefully from the beginning.
Before I answer, I have read your post twice so I took the quote of the question @bitmover which asks where do you save the seed phrase? which I think is a good question to find a solution to the problem you are facing friend.
Where did you stored your seed? In a paper? If not, that is a mistake.
I'm learning and you're probably at the learning stage too. But you're a little careless in my opinion.