If you do choose to update your NVIDIA driver, I recommend booting into Safe Mode, execute the NVIDIA installer, choose "Custom Install" and check the "Clean Install" checkbox. Booting into Safe Mode will eliminate other running drivers that could potentially interfere with your NVIDIA driver upgrade. Choosing "Clean Install" will first remove your current (and possibly corrupt) NVIDIA driver.
G74SX-A1 - stock hardware - BIOS 202 - 2nd Monitor VISIO VF551XVT