Windows 10: Buying Used Windows 7 Upgrade - what to look out for

I'm looking at buying a used copy of Windows 7 Ultimate with Windows Anytime Upgrade for an old PC.How do I know if the licence is OK to be used for an install? Is there a limit? The person said they haven't had a Windows 7 PC for a decade - does that count for anything?I don't know how to find a EULA for it to check.Thanks so much for any help

:)

 

Windows 7 Lover's Club: For Those Who Like Windows 7 As Opposed To Windows 8

Description:

• For anyone who likes Windows 7 as opposed to Windows 8 and wants to keep Windows 7 and not upgrade to Windows 8.
• Also for anyone who does not hate Windows 8 but refuses to upgrade because Windows 7 is perfect.

Requirements:

• Be human. Male or female will suffice.
• Love or Like Windows 7 much more than Windows 8.

To Join:

• Make a post.

Benefits:

• You will find true love one day.
• You have have a chance to get rich one day.
• You will have a chance for your dreams to come true one day.

 

is hardware OK (Win 7) for upgrade to windows 10

I think in one of the other PC with win 7 or win 8.1 I run media creators tools and in some step prompt/found graphics card not supported... for win 10. I didn't found alone reading specs of win 10, but the tool says me... after changed graphics card the tool said all OK and continued OK with upgrade... That I ask to reach this step in this current PC - win 7 - must be all OK for the upgrade? Or must continue to upgrade to show this?
and got to point

• UPGRADE this PC now
• Create media(DVD, USB stick, ISO)

is hardware OK (Win 7) for an upgrade to windows 10 for this PC???

 

To Buy Windows 7 Professional x64 Edition

So, I searched in Amazon.in as you suggested and I got a listing which describes as

"Microsoft Windows 7 Professional x64 SP1 EN 1PK DSP OEI DVD"

Can I buy this one?