No, you cannot use a Windows key from this.
No, you cannot use a Windows key from this.
I don’t recommend doing that. Using your old laptop won’t guarantee a clean install or proper setup, and it could lead to further issues. It’s better to get a new machine or follow proper procedures if you need Windows 7.
It's possible they used a bulk OEM key. You can find legitimate Windows versions at low prices in certain locations. Let me check if I can locate the links you mentioned.
When options don't work, you can check this site: https://www.reddit.com/r/microsoftsoftwareswap
Typically, it's an exclusive OEM key that can't be transferred, unlike a system builder key which is exchangeable.
It seems like you're suggesting trying something out. What do you think?