Have you tried it on another O/S? / live distro. Could also be a sign of liquid damage just chucking some ideas out there 
> From: adam.trickett@???
> To: hampshire@???
> Date: Mon, 4 Apr 2016 11:52:58 +0100
> Subject: [Hampshire] Dead touch pad on laptop that use to work okay
> 
> Hi,
> 
> I've a 6 year old Novatech laptop and the touch pad just stopped responding.
> 
> I can still see that the kernel has detected an touch pad device and the 
> buttons in it still work, as does the Fn+F1 to turn it on and off (well it 
> turns the buttons on and off). I can use a external mouse - which is better in 
> most respects - but it's still annoying.
> 
> Anyone have any bright ideas? It's not been dropped, abused or had any 
> significant changes made to it. It us running Debian stable.
> 
> -- 
> Adam Trickett
> Overton, HANTS, UK
> 
> People from bad areas steal your phone but people from good
> areas steal your pension
>     -- The Spectator
> 
> 
> -- 
> Please post to: Hampshire@???
> Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire
> LUG URL: http://www.hantslug.org.uk
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Please post to: Hampshire@???
Web Interface: 
https://mailman.lug.org.uk/mailman/listinfo/hampshire
LUG URL: 
http://www.hantslug.org.uk
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