I'm trying to install Windows 7 pro on my GL703GE but I can not find the Legacy option or the CSM option for the Windows 7 installation, I disable the safe mode, and the fast boot, but when I start the installation of Windows 7 is hanging on the Starting screen with a red band at the top and does not advance, the BIOS version is 310, anyone knows if there is any other way to enable the Legacy or the CSM on this laptop model?