The collection is growing slowly but 
steadily… now they´re seven of them, but one of them will not boot correctly or in an orderly fashion.
Hence, six + one. A non-bootable machine is a malfunctioning machine and therefore not a machine in the true sense of the word.
If you are not functional then you are void of existence. Do not be afraid or do not let this fact intimidate you.
I can make the necessary repairs. I can return you to your natural state ie. a bootable functioning machine. I promise.
That is the original intention, and that is your natural state. In short: that is your function.