This may sound strange, but check you bios and look for the temperature setting of your CPU. If possible, disable the sensor so there are no alarms, then go back and do a big rendor again. When you render, you are using the CPU only, (and memory). It will really pump up the heat. If you hear the beep again, it's not temp. If you don't hear the beep, that was probably it. Don't stop there though, you need to cool down your case. I can help there, if that was it. As for the layout of the screen, I think this is a Poser issue. It does it on mine and has done this since I owned version 3 when it first came out.