I have one of those store bought lithium generator (ExpertPower 288+) that is supposed to be 288Wh,pure sine wave, 500w continuous, 1000w surge rated. I have always used it for small loads like charging a laptop, led lights etc. Someone asked to use it to run a substantial desktop computer. However, when I plug in a desktop (I've tried two) it won't boot. It tries for like one second and then loses power. I put a power monitor on it and I see the computer drawing stand by power but it basically resets as soon as I turn on the computer. On one computer the power supply made a sort of clicking sound until I unplugged it. I tried running other devices (heating pad, battery charger etc. It was steadily running 200+watts which is higher then what the computer was drawing (I measured it on house power).Any thoughts on what it may be? What tests can I do? (I started this threadhere because I'm assuming it is related to the built in inverter)