HP Compaq Presario,Presario 1515 Supplementary Manual page 28

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Use your whole arm and shoulder to move the mouse, not just your wrist. Don't rest
or anchor your wrist while using your pointing device; keep your wrist, arm, and
shoulder free to move.
You can use the software control panel to adjust the properties of your pointing
device. For example, to reduce or eliminate mouse-lifting, try increasing the
acceleration setting. If you use a pointing device with your left hand, the software
control panel will allow you to switch the button assignments for maximum comfort.
Dirt can make pointing more difficult. Remember to clean your mouse or trackball
frequenty.
Keep your wrist in a straight, neutral position when using your
pointng device.
Don't angle your wrist when using your pointing device.