Fixes circuit board issues

I guess losing the ability to automatically detect changes to the power cable is inconvenient, I don't think it matters enough to force the computer to be machinery/power.

For the power monitor to do it's job, all it needs to do is read the viewload var from the powernet, which it obtains when it is constructed.

If the cable is cut or re-laid, it shouldn't be an issue to just take out a screwdriver and reset the computer.