Macbook Air will not take a charge, the fan runs in overdrive. runn extremely slow.
I have 5 macbook airs that have been in their boxes for 2.5 years. I went ot use them and they will not take a charge, the fan runs in overdrive. If they do startup they run extremely slow. What do I do to get them working?
MacBook Air 13″, macOS 10.15