I usually disable my touch pad with Fn/F6 but this no longer works. I suspect I have altered the system by inadvertently hitting a wrong key. What do I do?
What laptop are you using? At any rate, have you tried disabling the touchpad on Device Manager?– Doktoro ReichardSep 2, 2013 at 13:05
Please mention what laptop you have (I assume it is a laptop?), what operating system you are running (some kind of Windows?), explain why you have tagged it with "touchscreen" and then only talk about "touchpad".– terdon on strikeSep 2, 2013 at 13:08
If your pc is installed with the touch-pad driver, then you will(usually) have an icon in the system tray to manage touch-pad.
Check for the touch-pad driver icon in the system tray(My laptop is installed with synaptics touch-pad driver,so in my system tray I have an icon for synaptics pointing device).
If it is there, click on it and you can see various controls to manage it.Look for the option to enable/disable it.
If it's not there then go to control panel search for Device Manager ,open device manager check for your touchpad device(will be under Mice and other Pointing Devices) Disable it.
And if you want to get back the Fn/F6 functionality to disable the touch,try reinstalling the touchpad driver.