Open the 'Windows Control Panel' on your PC and Uninstall the 'Nokia Connectivity Cable Driver' . Then reboot both, PC and the phone. Now connect the phone to PC using the USB Cable and wait till the Drivers get installed. Also confirm, you are using the latest version of the Nokia Suite .
it seemed as it worked, but now when i plug in my phone to the computer, the screen blinks couple times then resets/restarts itself..whats the problem here?
Is the screen only blinking..or the phone is shutting down and then switching ON ?
..You may try connecting the charger first and then leaving the phone connected to it..connect it to the PC and see if it makes any difference ..