I read your PM about the ASUS Live Update error on the BIOS flash attempt. I recommend you uninstall ASUS Live Update or configure it only to notify of updates, but not install them. Several users have reported ASUS Live Update bricked their laptops when flashing a BIOS update.
Any time you flash a BIOS to your laptop, there is a chance it can render your system unusable. If you are not experiencing any problems, it is best to avoid updating the system BIOS.
I recommend reading
http://forum.notebookreview.com/asus/174395-bios-update-guide-asus-notebooks . html.
For the best chance of BIOS flash success, I recommend the following:
1) Format a USB flash drive with a single FAT32 partition.
2) Download the BIOS update file from the ASUS website directly to the flash drive. It is best the BIOS update has no contact with an NTFS file system. A corrupt BIOS on a bricked laptop was reported to contain the entire NTFS directory tree. See
http://forum.notebookreview.com/asus-gaming-notebook-forum/656498-g74sx-circuit-reprogram-bios-spi-p....
3) Uncompress the BIOS update from the downloaded container file. Note the filename, so you can select it later.
4) Restart the laptop, pressing F4 to enter the EasyFlash utility in the BIOS.
5) Select the BIOS update filename you uncompressed on the flash drive (there may be a backup BIOS file located in C: on your HDD also displayed in the list). Choose to flash your BIOS update file on the flash drive. The laptop will shut down and restart.
G74SX-A1 - stock hardware - BIOS 202 - 2nd Monitor VISIO VF551XVT