I am the person that will be helping you today.
As long as you have the product code/key, you can download the CD Image from the following page: https://www.microsoft.com/en-us/software-download/windows7
After you download the 'image', which is a cd image, you will need to burn it to a cd. Burn the image as an 'image' or as an 'ISO'. If you need a cd burning application, you can use the one found on the following page: http://cdburnerxp.se/en/download
- Once that is complete, you can use the CD to install Windows on the computer.
I look forward to hearing your feedback concerning whether or not your problem is fixed.
I hope to hear back that all is working. If this is so, please do not forget to rate my help on the top of this page (choose the number of stars and click the Submit button). If it is not, please respond below.
I will be standing by,Jason