Hi all. I have an HP Probook 640 g2. About two months ago, it wouldn't turn on. I removed the battery, put it back in, and it turned on and worked fine for about a month. Then, it started only working when plugged in-even though the battery showed on the bottom of the screen as being charged. Yesterday, I couldn't turn it on again. I removed and replaced the battery twice and it turned back on and worked fine. It also worked fine today until a few hours ago. I was using it and I bumped it off the arm of the couch. It didn't fall far and landed on a beanbag so I know there was no damage, but the screen closed and the computer immediately turned off and I haven't been able to get it back on. I tried removing the battery and holding the power button down and powering it up without the battery, tried removing and replacing the battery multiple times, and nothing. Everything I've read doesn't seem to fit with either the battery or the charger being bad. Any ideas?