Troubleshooting Amp not being recognized by the PC
Mar 23, 2022 at 10:00 AM Thread Starter Post #1 of 3

Vallenium

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Have an old Yulong U100 that I was trying to use again, but after turning it off and back on again my PC stopped recognizing it. Now I just get it as an Unknown USB device (invalid configuration descriptor) in device manager. I've tried uninstalling the UBS drivers, different USB ports etc. I haven't been able to find a direct driver download though. Anyone know what's the issue or if it's just broken?
 
Mar 23, 2022 at 3:55 PM Post #2 of 3
It's a Drop amp, right? So not sure if the drivers would be here: http://www.yulongaudio.com/col.jsp?id=111

You could also try removing your computer's usb root hubs and restarting--anything connected via usb would freeze/stop working until the reboot.

Last, there's a utility called usbdeview--it will show every past device connected via usb. You can go in there and delete anything that looks like it might have been the U100.
 
Mar 24, 2022 at 12:34 AM Post #3 of 3
It's a Drop amp, right? So not sure if the drivers would be here: http://www.yulongaudio.com/col.jsp?id=111

You could also try removing your computer's usb root hubs and restarting--anything connected via usb would freeze/stop working until the reboot.

Last, there's a utility called usbdeview--it will show every past device connected via usb. You can go in there and delete anything that looks like it might have been the U100.
I didn't get it on drop, but yes they did a sale of it. I tried the USB root hubs and the yulong website no longer seems to have drivers.
 

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