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I don't have my Windows 7 license key. I upgraded to the Windows 8 preview and now I am having problems with my computer because it says my preview expired and it keeps shutting it off.

I see you can buy a Windows 8 upgrade for $40. But someone told me I'll need my Windows 7 license. Is this true, or can I just put the upgrade on and have it work?

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If you have Windows 8 Release Preview installed you just use the upgrade tool to perform the installation. – Ramhound Jan 18 '13 at 17:55
    
Are you saying I won't need to enter the key? – Joe Jan 21 '13 at 19:23

When you use an upgrade version of Windows, you need to have a valid licence for a previous, eligible version of Windows. That licence is not freed up for use on another computer after the upgrade.

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This doesn't go into enough detail. For instance Windows an eligible version is the Release Preview of Windows 8. – Ramhound Jan 18 '13 at 18:31
    
Are you saying I need the actual key? Or is it okay if I lose it but the machine is one with a verified license? – Joe Jan 21 '13 at 19:22
    
@Joe - You need to run the installer from within Windows to determine your eligability. – Ramhound Jan 22 '13 at 12:11

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