I don't know anything about that computer in specific but if all 3 computers of yours stopped working suddenly then it is possible that you may have a power problem where there may have been spikes in voltages coming from your outlets. I suggest that you test your computer's power supply to see if it has a problem or if it happened to fry any of your components. You can also check this guide that I found on your computer that may help you find out if your computer had a power issue. Hope this helps!