Did you receive a Disk with your laptop? Because normally that would have all the device drivers and additional software you need to restore your laptop to factory specs.
When I did a search for your laptop drivers this is the Sony support link that came up:
http://esupport.sony.com/perl/swu-list.pl?...05GL#div_pos_94Is that the one you have already checked? I did not see any mention of the “jog dial” but if this link is different then the one you mentioned the sections I would check are:
- Sony Applications (various) - 2 file(s)
- System Components - 1 file(s)
- Touchpad - 2 file(s)
- VAIO Media Software - 8 file(s)
- Video - 1 file(s)
A lot of the times the functions you are referring to are not considered “hardware” but more like software functions on the laptop so this may not help, but you can always try checking in “Device Manager” and if any hardware is not installed, right click on it and do the “Update Driver” option and select the option to let Windows search for the driver automatically. This can sometimes resolve problems like that.
The last thing you can try is searching on a site like “Driver Guide”.com and searching based on your laptop model. (PCG-R505GL). If none of the above works you may want to call Sony and ask them what software you need to restore those two functions…
Good luck!