I have recently formatted my Vaio laptop - Windows 7 64 bit. I found that Function Keys are not working properly. And I would like to share the solution to all.
The cause is the 'drivers' are missing. So we have to install them. Please follow the steps below.
2. Under 'Select Operating System', choose your OS.
3. Under 'Filter files by type', choose 'Original Driver'.
You can see a list of drivers.
4. Under 'Application & Utilities', download and install the following drivers.
a. Notebook Utilites b. Sony Shared Library.
Thats it !