I have a Mac Notebook. I need to factory reset it. I know I need to hold down the option-command-R buttons after restarting and waiting for the grey screen. The problems lie in the fact that I have to use an external keyboard (which does not have those buttons). My keyboard on my laptop does not work. The only button that does is the power button. I haven't been able to find someone to work on it with a reasonable charge or time frame. That's another story. How can I factory reset it without using those buttons? I do not have the disk. My laptop does not have a disk opening or option.