My left button on the mouse pad wouldn't work

same issues when running only on battery? not plugged in?

XP and Vista Normal Mode Start your computer as you normally would. Click the "My Computer" icon on your desktop. Go to "C:\ Program Files\Sony\Setting Utility Series." Find and choose the "VCCPointingDevice" folder in the "Setting Utilities Series folder" to open the "Built-in Pointing Device" dialog box. Locate the "Enable" box on the "Built-in Pointing Device" dialog box. Check the box to enable the Vaio touchpad if you wish to use this device. Disable the touchpad if it is interfering with the external mouse. Uncheck the "Enable" box if you have a USB (PS/2) mouse connecting to your Vaio and wish to use that instead of the built-in touchpad. Pick "Yes, I'm Sure" when prompted to activate your choice, then close all the windows. Windows 7 Normal Mode Launch Windows as usual. Go to "Start" > "Control Panel" > "Mouse" > "Pointing Device" to open the Vaio touchpad control center. Uncheck the "Enable" box on the "Pointing Device" window when you wish to use your external mouse. Check the "Enable" box on the "Pointing Device" window when you want to use the Sony Vaio touchpad. Make sure the external mouse is not interfering with the touchpad if you have one connected. If so, unplug the mouse from your computer. Click the "OK" button at the bottom of the "Pointing Device" window. Close all other windows. XP and Vista Safe Mode Restart your computer. Press the F8 key before the Windows welcome screen appears to enter Safe Mode. Click "Start" > "Control Panel" > "Add/Remove Programs." Find and delete all software for mice and pointing devices. Restart your computer in normal Windows mode. Proceed to next step if the problem persists. Restart your computer in Safe Mode. Right click the "My Computer" icon on the desktop. Choose "Properties" on the drop-down list. Pick the "Device Manager" tab in the Properties window. Select the "Other Devices" folder and click on the "+" sign besides it. Delete all the devices under this "+" sign by clicking on the "Remove" button next to each of the items. Restart Windows in Normal Mode. Once Windows is operating, there will be a "New Hardware Wizard" pop-up that will load all the necessary drivers for the touchpad, mouse and other pointing devices. This should fix the corrupt driver for your Vaio touchpad. Windows 7 Safe Mode Reboot your computer and press the F8 key before the Windows welcome screen appears to enter Safe Mode. Go to "Start" > "Control Panel" > "Device Manager" > "Mice and other pointing devices." Click the touchpad icon. Choose the "Driver" tab and press the "Uninstall" button. Press the "OK" button to confirm. Restart Windows in Normal Mode. Go to "Start" > "Control Panel" > "Device Manager" > "Mice and other pointing devices." Choose the "Driver" tab and press the "Update" button. Press the "OK" button to fix the touchpad software.

http://esupport.sony.com/perl/swu-list.pl?mdl=PCGFRV26

The Sony Vaio laptop is typically sold with a touchpad device installed below the keyboard. The touchpad is for navigating the screen and is used like an external mouse. A touchpad can sometimes malfunction for no apparent reason, but there are ways on troubleshooting the device yourself before asking a technician for help. Start your computer as you normally would. Click the "My Computer" icon on your desktop. Go to "C:\ Program Files\Sony\Setting Utility Series." Find and choose the "VCCPointingDevice" folder in the "Setting Utilities Series folder" to open the "Built-in Pointing Device" dialog box. Locate the "Enable" box on the "Built-in Pointing Device" dialog box. Check the box to enable the Vaio touchpad if you wish to use this device. Disable the touchpad if it is interfering with the external mouse. Uncheck the "Enable" box if you have a USB (PS/2) mouse connecting to your Vaio and wish to use that instead of the built-in touchpad. Pick "Yes, I'm Sure" when prompted to activate your choice, then close all the windows. Windows 7 Normal Mode Launch Windows as usual. Go to "Start" > "Control Panel" > "Mouse" > "Pointing Device" to open the Vaio touchpad control center. Uncheck the "Enable" box on the "Pointing Device" window when you wish to use your external mouse. Check the "Enable" box on the "Pointing Device" window when you want to use the Sony Vaio touchpad. Make sure the external mouse is not interfering with the touchpad if you have one connected. If so, unplug the mouse from your computer. Click the "OK" button at the bottom of the "Pointing Device" window. Close all other windows. b> XP and Vista Safe Mode b> Restart your computer. Press the F8 key before the Windows welcome screen appears to enter Safe Mode. Click "Start" > "Control Panel" > "Add/Remove Programs." Find and delete all software for mice and pointing devices. Restart your computer in normal Windows mode. Proceed to next step if the problem persists. Restart your computer in Safe Mode. Right click the "My Computer" icon on the desktop. Choose "Properties" on the drop-down list. Pick the "Device Manager" tab in the Properties window. Select the "Other Devices" folder and click on the "+" sign besides it. Delete all the devices under this "+" sign by clicking on the "Remove" button next to each of the items. Restart Windows in Normal Mode. Once Windows is operating, there will be a "New Hardware Wizard" pop-up that will load all the necessary drivers for the touchpad, mouse and other pointing devices. This should fix the corrupt driver for your Vaio touchpad. b> Windows 7 Safe Mode b> Reboot your computer and press the F8 key before the Windows welcome screen appears to enter Safe Mode. Go to "Start" > "Control Panel" > "Device Manager" > "Mice and other pointing devices." Click the touchpad icon. Choose the "Driver" tab and press the "Uninstall" button. Press the "OK" button to confirm. Restart Windows in Normal Mode. Go to "Start" > "Control Panel" > "Device Manager" > "Mice and other pointing devices." Choose the "Driver" tab and press the "Update" button. Press the "OK" button to fix the touchpad software. Hope this help.

HI
IS THAT THE MOUSE PAD WORKING BEFORE
I THINK IS THAT PROBLEME COME FROM YOUR LAPTOP
TRY TO RESTOR YOUR YTEM

More then likely the button has worn out.The first thing I would try to check to see if its the button or not ,just plug a mouse in to the laptop and see if that works with left click if it does it just may need a new button put in.If your handy you may even be able to do it yourself.If you have any other questions just let me know.

Hi,

Please follow the steps to disable the Touchpad under XP environment:

First, click the Start button, then click VAIO Support Central .
In the VAIO Support Central window, in the left pane , click System Maintenance .
In the right pane , click VAIO Central .
In the VAIO Central window, click the System Information tab.
On the System Information tab, click the Plus symbol next to Keyboard and Mouse .
Under Keyboard and Mouse , double-click Built-in Pointing Device .
In the Built-in Pointing Device window, click to clear the Enable box.
Click the OK button.
In the Built-in Pointing Device dialog box, click the Yes button.

Thanks!!!!

mcdevito75 here, Bring laptop to Staples, Best buy for testing, sounds like that key could be hanging up. maybe some sort of oil needed.

try it with toggle keys it may be work

Common hardware problem. The correct solution is a replacement tracker pad and mouse, however you may be able to get the problem fixed by cleaning under the pad. Either way it requires taking the laptop apart.

WildeFalcon