How to update graphics without monitors working

[Windows 11]

Hi! I recently got new monitors for my gaming pc, everything works until I log into my pc, my wallpaper displays for a few seconds then goes white, it does this repeatedly. I cant even access my apps or windows option in the bottom left corner. Everyone is telling me to update my graphics card, but I cant access anything to do so, not even settings, all I see is white and then my wallpaper displays, and it’s a repetitive cycle.Ive already checked all my wiring on the monitors and pc, i’ve also already taken my RAM out and put it back in, I don’t know what to do.

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