Cemu
requires OpenGL support or you CANNOT use it. If your PC is incapable of OpenGL, then you either 1. Don't have video drivers installed, or 2. It's a pile of junk.
In which case you can either install the correct drivers and see if that helps, or get a better computer if you want to run CEMU. Those are your
only options here because Cemu requires OpenGL and cannot work without it.
Edit: A quick search shows the Celeon N2920 has HD 4000 series graphics. This supports OpenGL 4, so clearly you don't have updated video drivers. It will, however, run like complete and utter garbage on this machine.
Get a better potato, or just play on your Wii U.