Playing Jedi Knight, I noticed that there was no HUD at all on the screen: no crosshair, no health, no ammo, nothing. I tried instaling the jkultimate patch that has been suggested elsewhere, but all it did was make all graphics disappear; after unzipping every file in the JK folder, everything was black (except for the crosshair, ironically). I have also tried to press the minus or plus buttons, and to adjust the screen size in the game's setting, but it didn't work. I have also tried adding the "windowgui" parameter in the shortcut's properties, to no avail.

Is there anything I'm missing? If it helps, I'm using an Nvidia Geforce GTX650; in the game's settings, I have 3D Acceleration on and I'm running at 1024x720 resolution.

Also, the mouse view feels very clunky, no matter how I adjust the sensitivity; it's like it takes a lot of force before it registers that I moved it, and then it speeds away uncontrollably.

I can use any help, because I'm at my wit's end here.

3D acceleration doesn't work on Windows 8 and Windows 10. If there are any HUD elements on-screen, it won't render any 3D graphics.

As for the mouse clunkiness, try going to your pointer settings, and turning "Enhance pointer precision" off and then on again. This solved it for me. I turned it off, hit apply, turned it back on, and applied again.