This product which I have is actually a wonder. I had purchased 3 Lenovo laptop for my family members. The other two are total failures. This T60 model I had purchased 8 years ago, in 2007. At that time it had cost around nearly Rs.1lakh.
Except replaced battery twice, there has been no problem so far. It is really amazing for a laptop to run for so many years. Still it is working perfectly.
The OS is Windows XP Professional. Daily I use it for 12 to 15 hours, on working days. It is difficult to believe it but it is the truth. Except for this one all other Lenovo products gave me bitter experiences only. Another indicator of success of this T60 model is that this is one of the rarest model for which Lenovo provides a 3 year guarantee, (usual guarantee for laptops is only one year). Kudos to Lenovo T60 laptop.