Microsoft no longer provides these on their official site, but they can often be found on community archives like Internet Archive. A USB flash drive: At least 8GB to 16GB is recommended. Backup: The process will erase all data on the USB drive. Method 1: Using Rufus (Recommended)
Enter BIOS (F2, F12, DEL during startup) and: create bootable usb windows 7 online
Windows 7 end-of-life means no new security updates, but you should at least install: Microsoft no longer provides these on their official