prolific usb to serial comm port driver windows 7 failed

Installer again and continue immediately below. Once your computer reboots, start the driver Reboot your computer after removing the driver. Installed on your system and should be removed.

If the installation prompts you with the option to remove the driver, then a driver is already.Install the USB to Serial drivers from the FarmTek CD or from the website: 'Never install driver software from Windows Update,' then click 'Save Changes.'Ħ. Change driver installation preference to 'No, let me choose what to do' and Right click on your computer's icon under 'Devices' and chooseĭ. In the 'Run' dialog box, type in'control printers' and click 'OK'.Ĭ. From the Desktop, push and hold the Windows key Disable Windows from automatically choosing its own drivers:Ī. Do NOT plug the USB adapter back into the computer.Ĥ. After the uninstall completes, unplug the USB adapter from your computerĪnd close the Device Manager. When asked to confirm, choose to delete the driver software and click 'OK'Ĭ. Right click on 'Prolific USB-to-Serial Comm Port' and choose 'Uninstall'ī. Uninstall the USB adapter and its drivers:Ī. Note 2: If the 'Ports' category is not present, or the 'Prolific USB-to-Serial.' device is not listedģ. Note 1: If an error is NOT shown, then the driver is installed correctly – do NOT follow the Small error icon with an exclamation mark as shown here, Windows installed the wrong driver. USB adapter will show as 'Prolific USB-to-Serial.' followed by the assigned COM port number.

Click the arrow to the left of 'Ports' to expand the category. Look down the list of items for the 'Ports' category. Choose 'Device Manager' from the menu that pops up.Ģ. From the Start screen, push and hold the Windows key ( ) and With the USB adapter cable plugged into the computer, follow these steps to open the Device Manager:Ī. Follow these steps to confirm and correct this problem.ġ. The most common reason the computer interface cable fails to work is because Windows chooses to install its own driver for the USB cable instead of the driver you just loaded from the FarmTek CD or website. This troubleshooting guide will help you fix driver installation problems on a Windows 8 computer. This guide should be referenced only if you are experiencing a driver installation failure. If not, follow the instructions supplied with the computer interface cable. Computer Interface Cable - Driver Installation Repair This guide assumes you have already attempted installation of the USB driver supplied with the computer interface cable.

Prolific usb to serial comm port driver windows 7 failed