Windows 10: Lost my windows product key

I'm trying to find a way to possibly find my product key cause I lost mine and it may be gone for good it was a physical copy of windows 10 home and I lost it the product key sticker has been lost for a long time and I only have my cd and I was trying to reinstall my PC using a USB but I have no product key so I cancel it for the meantimealso is it ok for me to just exit the windows setup and unplug my USB then try to do it again later will it affect things? I'm new in installing windows through USBI'm trying to find my product key in my PC if there is a way? I really like it if I reinstall

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Lost Windows Activation Product Key

I recently lost my Windows 10 pro Activation product key and now Microsoft wants me to activate my windows but now i dnt have any product key please suggest me the way i dnt want to lost my all data...

 

Lost of Product Key

I bought my Laptop in July 2015 with the Home and Student Microsoft Word. When I refreshed my computer I lost the Product key and I could not find the CD that contain the product key. What shall I do please suggest and help.

 

Activate windows 10 after re-installing (I have lost my product key)

I own a Lenovo T430 laptop. In 2017, I installed Windows 10 using my original Windows 7 product key. Unfortunately, I cannot find that product key anymore. I need to re-install windows 10. Will it be automatically activated after the installation, if I skip the step of asking the product key during the installation?

In my opinion, I believe that my laptop will have a digital entitlement stored on the Microsoft Activation Servers and this will not be a problem. Is that true?

If not, please suggest me a solution or a workaround.