A few days ago, the left click button on the built in touchpad stopped working, and the right click was hard to get to work without pressing it just right. Took it apart, cleaned out the mouse circuit but that didn't help. Bought a replacement and it fixed the right click but not the left.
Tried reinstalling the driver, and looking at some other google results but nothing seems to work, and most of the results were about work arounds rather than actual fixes.
Everything seems to point to it being a hardware issue, but even after replacing the hardware didn't fix the problem.
My system is Dell XPS17 with windows 7