G1/Xtreme Gaming Windforce LED "Potential" Fix Steps:
1- Close whatever OC program you use for your G1/Extreme Gaming
2- Download and install v1.98 of OC Guru II **NEW VERSION**
http://www.gigabyte.com/support-downloads/utility.aspx?cg=3
3- After you have OC Guru II installed, go the LED section and apply the LED setting(s) you want your GPU to display
4- Click "APPLY" and ensure that the settings adhere as you set them
5- Ensure that NO OC or FAN profile is set in OC GURU II when doing this/prior to step 4
6- Restart your PC to ensure the LED profile you applied stayed in-place/is working
7- IF the LED profile worked, and you are satisfied with the LED profile you have... UNINSTALL OC GURU II from your PC **KEEP THE DOWNLOAD FILE**
8- Your LED profile SHOULD remain in-place
9- If so, restart your PC to verify
10- If all is well, keep the OC GURU II v1.98 download file on your PC (as a matter of convenience) as you can rerun these steps, in order to change your LED setup whenever you choose to do so
These steps worked for me, as I use MSI AB for my OC and OSD. It may not work for you... If it does, great! If not, I cannot say what to do... Good luck!