If your keyboard and mouse are not working during the setup of Windows 7 Ultimate, it could be due to several factors:
- Driver Issues: Windows 7 might not have the necessary drivers for your specific keyboard and mouse, especially if they are newer models. You may need to install drivers manually after getting access to another working input device.
- USB Ports: Since you've tried every port on your motherboard and case, ensure that the ports are functioning. Sometimes, USB ports can fail or may not provide power if there are issues with the motherboard.
- BIOS Settings: Check your BIOS settings to ensure that USB support is enabled. Sometimes, USB ports can be disabled in the BIOS, which would prevent any devices from working.
- Hardware Issues: There could be a hardware issue with the motherboard itself. If possible, test the keyboard and mouse on another computer to confirm they are working.
- Windows Installation Media: If you are using a USB drive for installation, ensure it is properly created and compatible with your system. Sometimes, using a different USB drive or method to create the installation media can resolve issues.
If none of these solutions work, it may be worth considering hardware diagnostics or consulting with a professional to check the motherboard and other components.