Video card not working in PCIe x16 slot?

Question

Iron

I sinned on the motherboard and not a working slot, but a friend's video card and a service center proved the opposite. I have an AsRock B450 PRO 4 mother. There are two Pcie 3.0 x16 and Pcie 2.0 x4 slots. Video card GTX 1060 6gb. In a full-fledged slot, it does not give an image, in a cropped one, everything is ok. The slot is definitely working. What could be wrong with the video card? It happened after another dust cleaning.

Answer 1

If another serviceable video card in the same slot runs on a full pci-ex x16 (you can look with different utilities, if I'm not mistaken, GPU-Z can also show), then the problem is not in the motherboard. However, it happens that some video cards can work at 1x, at 4x, at 8 and at 16, and some only at 16, or only at 4 and at 16. You need to check.
If this is checked, and the video card is definitely faulty - then there are few options - either capacitors along the corresponding pci-ex lines on the video card (ceramics, 2 pcs per channel usually), and the chip itself does not work on these channels (well, for example, it knocked out static when cleaning). You can ring with a multimeter in diode continuity mode, right on the pci-ex pins of the video card, but where are the capacitors, measure on the capacitors from the side of the chip. In short, service.

Answer 2

I bought a new motherboard gigabyte B450M DS3H V2 and faced the same problem. At first I sinned on the pci e 16 slot and thought it was a factory defect, but I tried to insert another device into it, which showed that the slot was working. (I tried updating the BIOS and checked the processor legs, the problem remained) Tell me how you could solve this problem, if you still could: /
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