need help reinstalling win 7 home premium upgrade version please help!

p5200 said:

I tried calling by phone but, the very long number they wanted they said it couldn't be done? should i have put the product key in when i installed the os? is there a way i can do it now?

Did you speak to a live Microsoft rep? (Just curious.)

There are ways to install to a blank drive using an upgrade license without having the qualifying operating system installed:

Doing a Clean Install with a Upgrade Windows 7 Version

Incidentally, if you have a 32 bit OS installed, to install a 64 bit version, you have to boot directly from the DVD. You can't launch the DVD from within a 32 bit OS.

Complete Option 3 here to activate Upgrade version on a clean or wiped HD: Clean Install with a Upgrade Windows 7 Version

The Upgrade key will then be recognized providing you type it in correctly and used the exact same version as is on the retail Product Key sticker, in 32- or 64-bit.

gregrocker said:

Complete Option 3 here to activate Upgrade version on a clean or wiped HD: Clean Install with a Upgrade Windows 7 Version

The Upgrade key will then be recognized providing you type it in correctly and used the exact same version as is on the retail Product Key sticker, in 32- or 64-bit.

I performed option 3 in the registry and all is well Thanks!

Good work. You can mark thread Solved at top.