Restart the machine and tap the vendor-specific boot menu key (e.g., for Dell, F11 for HP, F12 for Lenovo). Pick your USB device from the boot list.
Open an image burn tool like or the Windows USB/DVD Download Tool .
: This is the first service pack for Windows 7, released in 2011. It includes a variety of updates, including security patches, and improvements to stability and performance.
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