Bala,

Place the 2010 PV Elite DVD into the drive and choose the option to install the ESL drivers.

After the drivers have been successfully installed, use the program pulse.exe to check the Maximum Version number (which is in the memory of the ESL). This number needs to be 1210. The pulse program is located under the PV Elite 2010 folder in a sub folder called ASSIDRV. If your maximum version is 1209 or less, your key will have to be updated and you will need to contact COADE.

I had this same problem at home with Windows 7 and the above steps solved the problem for me.