1. Download the ISO file for your localized version of Windows 7 Home Premium 64-bit.
2. Burn the ISO to DVD using native Windows 7 CD/DVD software or create a bootable USB stick using the Windows 7 USB/DVD Download tool.
3. Place the new created Windows 7 media in your g6-1210sa and turn on the computer to boot from the media.
4. Answer all the prompts as required, except do not enter the Windows product key at this time.
5. Once Windows 7 is completely installed, enter the Windows product key from the bottom of your computer and activate Windows if needed.
6. Install all required drivers and then install all Windows 7 updates from Windows/Microsoft update.