hi, i have a samsung tocco and had trouble getting PC studio up aswell. The symbol to show that the phone was connected to my laptop was present on the phone but nothing on the laptop. I plugged it in a few times and left it connected while i was working on something else and it just appeared eventually!!!
I don't know why it wouldn't work at the start. Are your USB drivers all working? I know i had trouble with other devices and needed to upgrade my drivers which sorted the problem then.To check your drivers incase you dont already know: control panel >administrative tools> computer management>device manager>universal serial bus controllers. Check each one is working properly and if not follow the trouble shooter to fix it.
I hope this helps!!!!