Question PC wont show bios or windows

Oct 1, 2020
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Okay so this is my first time posting here i just got some new parts for my pc today and after putting all the new parts in, everytime i start it up, on my monitor it says Input Not Support my system is this:
Intel I7-10700 comet lake 8 core 2.9ghz Processor
Asus TUF GAMING B460M-PLUS MoBo
XPG Gammix D10 DDR4 16GB (2x8GB) Ram
XFX RX 580 8gb vram
Thermaltake 500w psu
And two 1tb WD HDD
Thats my new system my old system had an amd processor with the same GPU but now when i plug the gpu in my monitor just says Input Not Supported