Caveat: This solution concentrates on the pc hardware, not other equipment that might even be powered with the UPS. I've witnessed occasional reports of non-sine wave power getting incompatible with particular other units. Illustration #seven - you forgot the -jar selection when trying to run an executable JAR file, as https://kungfu50257.blogdigy.com/the-smart-trick-of-ups-uninterruptible-power-supply-that-no-one-is-discussing-50504668