So about a week ago my laptop (Sony Vaio VGN-498E) decided to through a new one my way - the left touchpad button just ups and stops registering clicks! Being fairly handy around a screwdriver, I disassembled the entire thing down to the touchpad. Physically the touchpad and ribbon look perfect, as do the buttons themselves. All plastic is strong and no sign of aging. So I ruled that out pretty quick. So I tested the actual physical buttons on the motherboard itself. When I press the small black right circular button, it triggers right-clicking. But the black left circular button, when pressed, doesn't trigger anything to happen. The strength of the press doesn't matter, it just refuses to register that a "click" has occured. Has anyone heard of anything happening like this? Is it the physical button on the motherboard that's died? Or is it another part of the motherboard? I don't have the money right now to go out and buy a new laptop so I'm wondering if anyone has any suggestions for me. I can solder moderately so if it's something I can take off and replace that'd be great but I don't know how to test to see what's went bad on the motherboard or in the button. Thanks for any help guys.