Hi Vikram M,
Well, we got almost 3 months of no problems with my Synaptics touchpad working flawlessly and then the problem returned! And this time, following the same steps you had provided, I was unable to get the Synaptics driver update you provided to take. I applied the bios update you provided and still no luck. Basically started over and noticed that even after completing the Synaptics driver install and it showing up under the programs, it did not show up under the device listing.
After repeating the steps 5 times, and rechecking updates steps along the way, I was able to get this last update to take. The Synaptics device finally showed up as a pleasant surprise. I didn't do anything different than what was done the first 4 times.
Any ideas to help me be prepared for the next time I loose the Synaptics device?