HP Pavilion dv2500t Notebook "cursor wiggling around" Questions

...cursor only moving in certain directions, etc.) however once operating on either battery or original adapter the touchpad acts normally. I have checked Acer?s website and the model adapter/charger ...

...cursor over the power icon on the status bar it indicates battery either 1% or 2% charged and charging. But, it doesn't seem to go above 2%. I checked the power adapter with a voltmeter and it is ...

...around $3 to $6. Here is but one example,http://www.radioshack.com/product/index.jsp?productId=2103245Connect the alligator clip to a good ground source.(I connect to an unpainted surface, of the ...