I've got a Toshiba a205-s4607 running on XP. The power chord stopped working a few days ago and I just got a new one online. Everything seemed fine, but after a few minutes of use, the mouse (a touch pad) either spazzes even from a light touch, doesn't move at all, jumps across the screen, etc. When I unplug the new cord from the comp, it goes back to normal. When I plug it in again, it's fine for about a half minute before it goes crazy. I have no idea what would connect the two. It's really weird. Any help?