If everything is plugged in correctly, after verifying part numbers for Original Samsung Parts and when in device manager you see either a red x, a yellow exclamation mark (!), a yellow question mark (?) or a device that is labeled “unknown device” typically seen under either Universal Serial Bus Controllers or Modems.
You can reach the Device Manager which handles all of the loading and maintenance of device drivers by going to:
-Start
-Run
-Type in devmgmt.msc
The main four categories that we will be concerned with are the Universal Serial Bus Controllers, Ports, Modem, and Network Adapters (for ActiveSync 4.x) submenus.
The best way to ensure that you’re updating the correct drivers is to unplug the device (from the cable) and pay attention to device manager.

Once you’ve correctly identified the correct driver to update, then:
Double-click on the device name
Choose the “Driver” tab
Choose “Update Driver”
If Windows asks to connect to the Windows Driver Update Database, just select “No, not at this time” and click Next.
Select “Install from a list or specific location”
Hit next
You will see this screen.
Ensure that the “include this location in the search” box is checked and then click Browse.
Once browse is selected, the following window should appear.
1. Select My Computer
2. Select Local Disc C:
3. Select Program Files
4. Select Samsung
5. Select PC Studio 3
6. Select USB Drivers
7. Select 1
Once you hit OK, it will take you back to the Wizard screen. Simply hit “Next” to continue.
You should see it begin to install the files into the System32/Drivers folder.
Once that is complete, you should get a confirmation stating that the installation has completed. Hit Finish.
If the found new hardware wizard comes up again, don’t worry, most devices use 2-3 different device drivers. (which may or not be in the same directory) Just repeat the steps listed before. 