i was trying to program my microcontroller and had the following error on my prolific usb com port "Windows cannot determine the settings for this device. Consult the documentation that came with this device and use the Resource tab to set the configuration. (Code 34)". i tried everything but cannot get it to work. my computer is a lenovo G560 series. i cant find any documentation on how to manually change settings.i'm using windows 7

How many forum threads are you going to start on this problem? There is no need for more than one.

When you tried everything did you try uninstalling and reinstalling the driver?