Download the Windows USB/DVD Download Tool from Microsoft (still available via archive or major tech sites).
Choose USB device (recommended) or DVD . download file iso win 7
Enter your valid Windows 7 product key in the box provided. The key must be 25 characters, in the format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX . Download the Windows USB/DVD Download Tool from Microsoft
Browse to your downloaded Windows 7 ISO file. download file iso win 7
After verification, you will be presented with a language selection menu (e.g., English, French, German, etc.).
Select your language and click Confirm .