I have tried the uninstall device at least a dozen times but Win 11 always manages to find its own driver (I think)
Hi Barry, assuming you are following the steps in this post (the one above yours)…
viewtopic.php?p=7398#p7398
… and in particular step 7, it could be that Windows has also assigned this driver to something else and so is not completely uninstalling it. With the cable connected try this…
Follow the steps in the guide but when you get to step 4, notice there is some text at the bottom of the window with a link to ‘Devices by driver’:
Prolific_Uninstall Device_By_Driver.png
Click this link and the device manager window should now show a list of drivers rather than devices.
It should already have selected your USB device (note on your system it may read something different to the one shown in the window below:
Prolific_Uninstall Device_By_Driver_2.png
Select the actual driver listed above your device. In the example it is listed as oem31.inf (ser2pi.inf) but it may read something different on yours as the example is showing the correct driver, the the broken one windows is installing.
Right click it and select ‘Remove driver’
In the window that opens up make sure both the ‘Uninstall this driver from any devices that currently use it’ and the ‘Attempt to force removal of this driver while it is still in use by devices’ checkboxes are checked then click the ‘remove’ button.
Hopefully this will completely remove the broken driver that Windows insists on installing.
You can then switch back to the normal devices view in device manager by going to View->Devices by type
Once you have followed the above try steps 8 to 11 to install the driver you downloaded from the first post of this forum thread.
Hopefully that will fix it.
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