@polish-potato said in Keyboard won't bring up retroarch menu.:

Edit: Only the NES emulator does that for some reason. Ah w/e it works. :)

You might have saved manually the RA config in RGUI for the NES system, overriding some of the configuration that RetroPie sets automatically. You can check that by looking in \\retropie\configs\nes\retroarch.cfg - if it's a large file with almost all RetroArch options, then you've saved it - or reset it - from the RGUI.
To make the keyboard and gamepads work at the same time, I think you need to have menu_unified_controls = true in the config file.