Since you dont meet the requirements at the moment.... dont try 800x 600
Run the confic seperately (Start, menu, larian studios, Beyond divinity, configuration)
Try the 640 x 480, FSAA mode 0, NO FOG. (if the reset button is click-able, click it to make sure that there are nothing in the dynamic folders)
Then click on apply and close (DONT TEST) and see if you can get to run the game...
other than that... maybe lynn has some secret tricks up her sleeve.