I have a product key for windows 7 and I have windows 8.1. How do I install windows 7?

[bobnesbitt]

How to Install windows 7 over Windows 8.1?

 

[jsmithepa]

You have to get a W7 DVD somewhere or ISO. Microsoft used to let you download it but I dunno why they stopped. Maybe able to get it from eBay. If this is a brand name ready-built, the vendor maybe able to snail-mail you one after your proof of ownership.

 

[aldan]

boot from your windows7 dvd and format the drive.then let win7 install do its thing.

 

[Dark Lord of Tech]

https://www.microsoft.com/en-us/software-download/windows7
If you have a retail key.

 

[USAFRet]

How to Install windows 7 over Windows 8.1?

You have to purchase a valid WIn 7 install. Which will come with a license key and the install media.
Boot from that install media and install.

 

[bobnesbitt]

boot from your windows7 dvd and format the drive.then let win7 install do its thing.

I don't have the DVD only the product code. Can I create disc?

 

[USAFRet]

boot from your windows7 dvd and format the drive.then let win7 install do its thing.

I don't have the DVD only the product code. Can I create disc?

As mentioned above, go here. Try this:
https://www.microsoft.com/en-us/software-download/windows7

 

[Dark Lord of Tech]

I have a link above , if you have a valid retail key.

Otherwise pretty much have to buy it.