Acer Aspire E15 Start ES1-512-P18H I have tried resetting battery 4 secs, can’t/don’t know how to remove battery, unplugging and holding power button 20 secs, plugging back in an powering up, etc. I don’t have an external monitor. I’ve tried many different internet websites. It never makes sense. It used to power on and screen would come on occasionally, then rarely, now never. I do not know how to work on the computer; heck, I tried to unscrew back with a Philips screwdriver, but I don’t have the right size cuz it’s not unscrewing. Please help!