I just got a HP Pavillion x360. It had start up problems. It would show the HP logo screen then it would just remain black. I googled it and it suggested to remove the battery. I did that but I put the battery back in and it won't turn on and it won't charge. The light to show that it is charging doesn't go on. I had the charger plugged in when I removed the battery. I assume I messed up. What do I need to replace or do to fix this? How do I check what is the culprit?