Problems with 3 GTX 980 SLI

Jul 10, 2018
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Hello, I am having trouble with my trouble my graphics cards. I have 3 gtx 980s with SLI, only 2 are showing up in the nvidia control panel with the 3rd showing in the device manager with code 43. Before this i had all 3 up to date running with SLI but the pc would freeze, screen will go black and the pc restarts.
 
Solution
Either PSU is not good enough or had issues, that card is bad or there is an issue with the PCIe slot. Test cards one at a time to make sure they are OK, test different PCIe slots. May need to try another power supply.