As the title says, I cannot get my version of SW on my home computer to not show hidden lines. I will attach a picture to show what I mean. I have already tried to turn off hidden lines in the visibility settings.
Turn on "Use software OpenGL" under Tools->Options, System Options tab, Performance category. You have to do this without any documents open.
Or (more likely) turn it off if it is on.
Also if its not that then check if this hasn't happened on its own. You see that the part has changed to transparent with the cut extrude. If its this then click the eyeballs to make it back to solid.
Its happened to me a couple of times.
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