A couple of weeks ago I ran into the plugged in not charging problem soo many people have experienced. I went through the most popular solutions, taking the battery and AC out and holding the power button, uninstalling the ACPI and checking for updates. I even bought a new battery which came with a bit of juice that kept me going for a little while at work before it tanked to 0% today. I went to a HP store and tried another charger and that didn't work either. I'm afraid that it may be a motherboard issue, and at the moment I cannot really afford the expensive bill that will likely follow from taking it to a computer repair shop.