Question I need help no signal to tv. All fans work no usbs work

Oct 30, 2019
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So my friend kep telling me to see if his graphics card works and he wouldn't stop bugging me so I plug his in and then he tells me he doesn't have a dvi cord... So I take it out and plug my gpu in and no signal... And non of the USBs work I have 6 fans connected to the power supply and those work and the cpu fan works the GPU fans work too. I think it's the motherboard but I don't know how it could have whent bad I need help.
Specs
CPU ryzen 5 2600
GPU red dragon rx 570
RAM 2x 8gb ddr4 Corsair vengeance
Motherboard msi b450 tomahawk
Help would be appreciated thank you