Originally Posted by BK_123
When I've done the free upgrade, I've started it from within Windows and once its started it should automatically reboot at every stage without requiring changes made in the bios.
When upgrading, you start the process from within Windows, when doing a clean install you boot from DVD or USB.
OP - If you're wanting to upgrade your laptop as you stated, don't change the boot order to boot from USB as 1st choice, keep it as boot from hdd as 1st choice. Also, boot into Windows and then plug in the USB and run the installer from the USB drive.