Need some serious help with my gpu

So Im so close before giving up. First I had a sound issue, fixed it by doing a new installation. But now I cant get my gpus working for whatever reason. Installed the driver, put nvda_drv=1 in rebooted. didnt worked, using npci=0x3000 and all that stuff, didnt worked. I dont know what im doing wrong. Reinstalled it multiple times. Specs: ASUS X99A USB 3.1, GTX 980 ti, Sierra 10.12.3

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