How do you reset the settings on the Respironics Model 1005792?

There a tiny hole at the bottom, insert a small paper clip and hold until the screen goes black

One method is to click on the View command in the main toolbar. Scroll down to Zoom and click to bring up the sub-menu. You can then choose to Zoom In, Zoom Out, or set a custom percentage of screen...

To reset one's BIOS to factory settings, look for the terms default, factory, or recommended. You many have to press F1 for help. Sometimes the default settings are listed in the help. You can also...

Either flip on the ON switch and press the key that enters SETUP config mode, or consult your hardware manual to see which jumper block you need to change.

You should be able to do it with a computer but if not than you might have to do it manually.