Windows 10: How activate windows after reinstall without licence key

My computer was reinstall but is windows is not active. Laptop is in my device list in my microsoft account. i do not have activate licence key, laptop was active from shop. Pls any idea?

:)

 

Reinstalling Windows 10 without a licence key

Hi,

I have a 10 year old laptop which originally was running Windows Vista. Due to the manufacturer date of the laptop, I was entitled to the free upgrade to Windows 7, which I kept until the roll-out of the Windows 10 upgrade. When my laptop upgraded to Windows
10, I did not pay for the upgrade and did not receive a licence key.

1. If I go to the Windows 10 download tool and select install with the 'keep Nothing during the upgrade' option, will I require a licence key?
   
2. Can I build the laptop from scratch if it was originally a Visa machine or will I need to step from Vista to 8.1 to 10?

Regards

Keith

 

Two OEM licence keys (different Windows versions) on one PC

Hello,
I'm in the process of building another PC and I want to know if it's possible for two versions of Windows to reside next to each other legitimately. I would have windows 7 and 10 as a dual-boot system. So if I buy OEM keys and activate them would one de-activate the other? I know that OEM licence keys are bound to the mobo and are irrevocable. Any advice is greatly appreciated. Thank you.

 

Windows XP Home Licence...

Hmm I have not had a key black listed yet but I dont activate it often and ONLY on 1 hardware at a time.