01-02-2018 05:46 PM
I have recently encountered two bus issues on my recently acquired old-ish second-hand ThinkPad X230 [2325SWK build with a G2ET91WW (2.51) BIOS], accompanied by a ThinkPad UltraBase Series 3 docking station [P/N 0B67692].
My research requires me to use a Cyrillic (Russian) keyboard and fairly recently I acquired a nice keyboard with a small footprint in Saint Petersburg. It is manufactured in China by A4Tech (www.a4tech.com) [Model KV-300H].
When I initially plugged the keyboard in, it worked perfectly. However, after a short number of pluggings and unpluggings, an error message appeared: "USB device not recognized. The last USB device you connected to this computer malfunctioned, and Windows does not recognize it." More detail on the error appeared in item 1, below.
1 Unknown USB Device (Invalid Device Descriptor)
Error msg: 'Location: Port_#0003.Hub_#0004
Windows has stopped this device because it has reported problems. (Code 43)
The USB device returned an invalid USB device descriptor.
Driver File Details C:\WINDOWS\system\DRIVERS\edevmon.sys'
The system searched automatically for software online -- but didn't find the driver within 5 mins, at which time I
cancelled the process.
The keyboard manufacturer says that no driver is required.
2 IWD Bus Enumerator has a driver problem.
Error msg: 'There is a problem with the driver for IWD Bus Enumerator. The driver needs to be reinstalled.
Name: IWD Bus Enumerator
Error code: 31'
This came up as a result of reviewing problem 1, above.
I'd be grateful for any help, especially on problem 1. My location is Australia.