I just bought an RTX 3080 that refuses to work properly. The LED lights turn on but the fans do not start and my monitor says "DP no signal". I know there is nothing wrong with my monitor because it works fine with my old GTX 1080 Ti.
The manual for the RTX 3080 says it needs a 6-pin and an 8-pin PCIe which I have put. My Cooler Master is 750 watts.
I'm a total noob to this so please help!
I've attached some pics.