I accidentally deleted my windows 10 product key

[Gergő Korsós]

I accidentally deleted my windows 10 product key.i have no stickers and neither command promt or showkeyplus works. the problem is that i got my laptop as a gift so i don't have the email for the purchase and there is already the "activate windows" on my screenHow can i get it activated?Edit: it says error code :0x803f7001

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