Prolific usb to serial comm port driver windows 7 failed




















But, look carefully on this page and you will read an important notice in RED :. This is clear: if your device is using an old chip version of PL, the drivers not works with W10 and W8. As many people, you probably upgrade directly from W7 to W10, and sure, don't know that this problem was already present with W8. Hey, but I can't do that myself!!!

I don't want to send my devices to trash because they are too old less than a year! May be, a solution will be to use the old W7 drivers version into W Not tested I will try Threats include any threat of suicide, violence, or harm to another. Any content of an adult theme or inappropriate to a community web site. Any image, link, or discussion of nudity.

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Click on properties, and get the details:. Sometimes, installing the latest version of drivers solve the problem, but in this case, this is the opposite. The latest version doesn't work anymore with old hardware, and you need to downgrade the driver. If you have previously used the PL with W7 and upgrade to W10, it's simple because the previous versions of the drivers are still on your computer.

To downgrade, use the configuration panel, choose COM and LPT and right click: the first choice should be "update driver" or something similar: sorry, but I've the French version, and hope my translation is understandable. On the next windows, choose the second option "Look for a driver on my computer". Another windows appear, and select the bottom option: "choose from a list on my computer".

You should now have a list showing all versions of the driver available. By example:. I have tried with 3. If you don't have the old versions of drivers, you can tried to install them from the minidisc provided with your product. Launch this program, it will install the driver. But, as soon as you plug the device on USB port, you W10 will revert to the latest version 3.

USB recovery formatted. Data recovery flash drive. Data recovery pen drive. Data recovery memory stick. Unformat USB device. USB not recognized? Fix unknown USB device. Pendrive not detected. What size of USB you need. Encrypt your flash drive. I think it is still causing the issue with the receipt printer but if I uninstall it from Device Manager, it just comes back after restarting.

It will not show up in the device manager if the Serial Port is disabled in the bios What you should have done was fully remove the printer driver WHILE the printer was attached, and then reinstalled the printer driver cleanly. For usb printers, if you can find a downloadable driver use it. For label and receipt printers like Zebra and Epson especially. If the printer was moved to a different physical USB port, this would generate a new identifier in Windows.

Printer A is moved usb ports. The Prolific converter may be in the printer and not the computer. What if anything is actually connected to the computer? Any other cables besides keyboard and mouse? If I have the print job window open, I can see the test page show up and then disappear so it seems like it's sending the job to the printer.

We've already tried a different USB cord and printer. CrashFF, I tried removing the print driver from the link for Windows 10 but after removing the printer and then trying to delete the driver in Print Manager, it says "The selected driver cannot be deleted.



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