You need to have Shaders on to have the blood spill on the floor.
..To enable Shaders, run Toribash, and on the menu: Setup -> Options -> tick Shaders and Fluid Blood
....If you can't enable Shaders, update your graphics card's drivers.
......To update your graphics cards, go to Run, and type dxdiag, and press Enter.
......A window should pop up, go to the Display tab and check the name of your graphics card.
......Copy it and paste it in Google and add drivers to the end, that should give you the page of the download page.
........If you still can't enable Shaders, search for your issue with the Search function.
........If you can't find a solution for your problem, then your graphics card doesn't support shaders, which means you can't get the blood spilled on the ........floor.