Yes, you can transfer Windows 7 from your old laptop to a new one.
Yes, you can transfer Windows 7 from your old laptop to a new one.
I’ve finished my research on this topic. It seems contract law applies, but the outcome wouldn’t matter in court—Microsoft isn’t likely to take action. The rules are outdated, yet enforcement would be seen as unwise and unfair. Installing OEM software on your own machine is against the law, which would be rejected if challenged in court. This is mostly about discouraging people from cutting corners and profiting from it. You could argue that including Mein Kamph in the terms would make it clearer, but even then, if someone doesn’t grasp the agreement, it wouldn’t hold up legally. Essentially, it’s not illegal to use your own product, just because others might try to exploit loopholes.
You might test the old keys on the new PC to check functionality, but you'll need to re-download the Windows 7 ISO. Simply installing the old drives won't ensure normal booting.