Hi, I have a very annoying problem with my laptop! When I have the ac adapter plugged in the laptop boots fine and works perfect. If I try to boot up using just the battery I am getting a machine exception error and it reboots itself. Also when the ac adapter is in, as soon as I unplug it the laptop runs for a couple of seconds and then blue screens. The battery is 95% charged and I have tested it on a friends laptop and it worked perfect. I have tried reinstalling XP but that didnt cure the problem. In order to reinstall I had to physically remove the battery as the install kept hanging with 13 minutes to go, it was the registering components phase. As soon as I removed the battery the install went straight on! I have tried to follow the instructions to debug the minidumps but I have got completley confused, its like double dutch!! If anyone could suggest a fix or make sense out of the minidumps I would be very gratefull. Thanks in advance.