hp 6710 touchpad + universal charger = crazy mouse movement
So this is a strange one. I've just finished re-imaging some old HP 6710b's for student use in one of our classrooms and noticed this issue. When it is on charger (universal 150W at 19.5v) and disconnected from a network cable, the touchpad just goes nuts! It will randomly click and jumps in a more or less vertical line all over the screen. You don't even need to attempt to move the mouse, just touching the touchpad will cause this. However reconnecting the network cable corrects the problem or replacing the universal charger with an HP charger does as well. Unfortunately, we aren't able to return the universals and spend the extra on the HP AC adapters. Any idea on a fix for this?