I have personally killed two Windows laptops with an MSW inverter.
I ran one of the laptops off the inverter for several days or weeks before the laptop died.
I had a backup laptop, different model from the same company, and it used to the same charger. I plugged the charger into Shore power, and charged my backup laptop with it. This killed the backup laptop. So the MSW inverter damaged the charger in some way that caused it to kill the second laptop.
My MSW inverter has a USB Jack that is active even when the inverter is switched off. I've used that to charge my phone a few times with no problem. Of course I don't know if doing it multiple times over time would be problematic.
