Why did the graphics card stop working after installing an SSD?

Question

Iron

Installed an SSD via NVME on a PCI-E slot. After that, the video card stopped working (in general, it does not even turn on). Motherboard GIGABYTE. Processor - Intel Core i5. Video card - Nvidia GeForce GTX 630. What's the problem?

Answer 1

The only thing that comes to mind is that there are not enough pci lines.
Can you put x8 instead of x16 in the bios?
Then put in the ssd. And check
Core i5 first generation or second?
Gygabite what revision - the first or second?

Answer 2

There may be a weak power supply, and the video card is no longer enough. Maybe during installation they hooked a video card, pull it out and insert the words.