One of them is,When we use touch-pad of our laptop to move mouse Cursors it's working perfectly but when you try click any where, nothing happens and you can be think your touch-pad got crash but that is not a hardware problem!!
it's just a software problem due to bad driver or virus in you computer.
now the fist solution is, use the touch-pad keys for clicking :p
or you can try to resolve it's at your end for this ..B)
you should have to update/reinstall you touch pad driver from dives manager and again your touch-pad will ready to working properly
:)
