Gpu issues and questions about mobo

Vitality_AS

Reputable
Dec 6, 2014
7
0
4,510
My gtx520 isn't working in my new pc (it got carried over from my garbage setup while I save for a 1060 6gig).
Fan isn't spinning and frames are lower than expected in benchmarks, it doesn't show up in dxdiag yet when I turn the pc on it flashes (gtx520 nvidia 1025mb etc.). I was also wondering why some pci-e ports are small and some are larger. And finally what is this 5 pin port under my pci-e4? (https://ibb.co/kwkXXG)

Specs:
- asrock z370 pro4
- 8gb ddr4 2400hz
- i3 8350k 4core 4.0 base hz
- Corsair VS450 (fire hazard I know)