Sounds like a hardware problem - I would bypass the problem by using an external Mouse.


Good Luck

My Sony Viao touchpad stopped working as well. I called the Sony support, they ran a simple test (booting in a different mode) and determined that the touch pad requires replacement. Oddly, about a few hours later, our Asus laptop touchpad stopped working. The Asus helpdesk suggested to reboot, but remove the battery for a minute before starting it up again. That fixed the problem on both laptops. Except, I noticed that my touchpad works fine at the office site while I am connected to the network via ehternet cable, but when I am at home using a wireless connection, the touchpad will eventually stop working again. Any clue why? Virus? Sony Viao is scheduled to come this week to replace the touchpad.

The problem was resolved. The Sony tech replaced the touchpad, but the same problem occured (i.e., the new touchpad did not work). After trying several things, he realized it was the power cord. When the power cord was unplugged and laptop used the battery power, the touchpad worked. I bought a knock-off power supply cord not from Sony. Evidently this could impact the touch pad. You get what you pay for.