My eMachine E627 has a separate button (to the left of the main power button) which disables the touchpad. If the orange indicator light is on, the touchpad is disabled. My search for what was wrong (I didn't know about the button, nor that I had pressed it, and the setting is remembered even after reboot!) was complicated because the Touchpad does not appear under 'Human Interface Devices' in Control Panel, as other mice do.

Feb 28, 2012 I have installed the synaptics touchpad driver. Emachines e525 touchpad problems. Solved Emachines e725 touchpad scroll problems after upgrade to Windows 10. Fahn Tolosa Marin Tremor Rating Scale Pdf there. Bobby Deol Soldier Mp3 Songs Download there. 24 rows Synaptics Touchpad Driver v12.1.3.1: Touchpad.

It is under 'Mice and other pointing devices' though - I didn't notice that group!