Follow my instructions to Download Dell Windows 7 Pro ISO (Media Refresh January ) from Dell and Make a Bootable USB. Part 3: Booting from a Bootable USB. Navigate to and select the Windows 7 ISO image. 6. Click Start. Page 3. 7. Click OK on the warning dialog box.
 
 

Where i can find uefi iso image for Windows 7. – Microsoft Community – Method 2. Use MiniTool Partition Wizard

 
Follow my instructions to Download Dell Windows 7 Pro ISO (Media Refresh January ) from Dell and Make a Bootable USB. Part 3: Booting from a Bootable USB. Navigate to and select the Windows 7 ISO image. 6. Click Start. Page 3. 7. Click OK on the warning dialog box.