You can't install ATI drivers on the original vBIOS. You are definitely a vBIOS candidate. I installed OD2 vBIOS in my G73jh and really like it. I have the latest ATI drivers too! THe temps are lower and the battery last longer, plus I can use Overdrive in CCC if I want. GPU-Z says my vBIOS is "012.020.000.032.038352 (BR038352.001)"
Asus Maximus V Extreme BIOS 1903, see specs above avatar.
Asus G73 jh A1 laptop, BIOS 213, vBIOS OD2, 8 GB Ram, 240 GB Intel SSD, 180 GB Intel SSD. Win 7 Pro. Purchased new from PowerNotebooks.com in May 2010.
(both have 1920X1080 hd screens, mine above, hers below )
Asus G73 Sw XR1 laptop 8 GB Ram, 160 GB Intel SSD, 80 GB Intel SSD. Purchased used >Ebay 1/10/13, Did clean install of Windows 7