Re-installed your Touchpad driver.By default,it shoud work otherwise use an external USB mouse and check your Right-Click. If it work then the notebook Right Click Touchpad mouse has some faulty.
I think you won't be able to find spare in any sites even Manufacturer sites,you have to carry on with an external USB Mouse.
Answers & Comments
Re-installed your Touchpad driver.By default,it shoud work otherwise use an external USB mouse and check your Right-Click. If it work then the notebook Right Click Touchpad mouse has some faulty.
I think you won't be able to find spare in any sites even Manufacturer sites,you have to carry on with an external USB Mouse.