This computer belongs to a friend from church. It is an HP ZE 4145 laptop computer. There are problems with the off- on button and, when pushed, the power led on the front only winked a few times. I found out on the web that the buttons along the top of the computer also start the computer. I found that once in awhile, pushing the email button would sometimes bring up the screen and the blue lights for a few seconds. Then everything returns to dead. The power jack wobbles and I believe that is the problem. The battery is dead (no lights on the battery light up) I think that leaving it plugged in gets a little charge into the battery or it recovers just enough to light up the screen and blue lights for a few seconds. I have removed all of the screws and the hard drive trying to access the moboard in order to replace the power jack. I can't get it apart. Can someone please tell me how to open the case to access the motherboard? Also how do I remove the keyboard? I would guess that if I had a good battery, it might work until the battery went dead. That is why I need to replace the power socket. Thanks