Press “ Windows” + “ R” keys to load the Run dialog box.Ģ.Delete ‘UpperFilters’ & ‘LowerFilters’ registry keys. How to solve USB Error Code 39 (or 41)– USB Ports & Devices not working Step 1. * Note: The solution is tested and it works perfectly on Windows 7 OS, but also works on Windows XP or Vista based computers. After a lot of research, I finally discovered the solution below that fixed the USB Controller Error 39. (Code 39).”Īfter examining and troubleshooting the USB ports using the instructions from this guide: How to fix USB device not recognized or USB not Installed problem, the USB Controller problem still existed on his laptop.
When error code 39 occurs, then, in device manager, all USB ports appear with a yellow triangle with an exclamation point and at the device properties, the following error description appears: “ Windows cannot load the device driver for this hardware. Furthermore, no USB device, like a USB Printer or a USB storage device, could be recognized by his system. A few days ago, one of my customers noticed that the USB mouse was not working on his laptop computer.
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