There are 3 external USB ports on this L500 modelPSLS6C-00F005. The one on the front right has developed a problem. Nothing is recognized when plugged in. An unrecognized device error pops randomly even with nothing plugged in to the front port. When the error pops the other 2 ports stop working momentarily. For instance the wired mouse I have connected to the working port will stop, then be re-detected. The trackpad always works.
While running windows 7, I fiddled with drivers, uninstalling/reinstalling USB components in device manager and I disabled the faulty device but the error returns. I found that disabling the usb hub component made the error go away. Unfortunately the other 2 ports are attached to the same hub so I lose all usb functionality.
I decided to try and do a fresh and clean install of Windows 10 in hopes of curing the USB issue but that didn't do the trick. I found I can turn off the annoying error notification and that the error is a bit more descriptive "unknown usb device (device descriptor request failed) driver error.
Disabling the device in device manager seems to lessen the problem but in Windows 10 the device keeps getting re-enabled.
Does anybody have any idea what I might do towards correcting this issue, although I expect it's a hardware problem. Is there a way to permanently disable that one particular usb port?