Would you like the for the SP1 64-bit ISOs so you can verify any file you find?

Obtaining a legitimate Windows 7 64-bit ISO is currently the most significant challenge for users. Microsoft officially discontinued public digital river links years ago.

The original Windows 7 64-bit ISO was designed primarily for BIOS (MBR) booting. However, with specific modifications (adding USB 3.0 drivers and EFI boot files), the 64-bit ISO can be made compatible with modern UEFI systems, a necessity for installing Windows 7 on hardware manufactured after 2015.