Building a New PC: Obtaining Installation Disks

Hello.

I'm planning on building a new PC myself for the first time and I'm not sure how to go about getting the proper disks to install Windows with. I have a genuine product key for a copy of Windows 7 Professional 64bit which I downloaded from Microsoft directly. If I recall, I had to purchase a clean install version because I could not upgrade to 7 Professional from Vista Home Premium.

Is there a way I can use my product key to obtain the disks I need to install Windows on a new system, or will I have to purchase another copy entirely?

If you downloaded Win7 Pro from MS directly as you say, then burn the ISO file to DVD using Windows 7 USB-DVD Download Tool, boot the disk to Clean Install Windows 7

Why would you have to buy another if you already bought it? That's ridiculous. If the download failed then go back to the link and Download it again.

Thank you for the response.

I meant to say that this particular version of Windows I purchased and downloaded is the one I'm using on my current machine.

What happened to the disk you used to install?

If you need the latest official isntaller ISO with SP1 then use the one in Step 1 of Clean Reinstall - Factory OEM Windows 7 which steps will also show how to get a perfect retail reinstall.