I'm using a WK3300 as a MIDI trigger for my DAW. The driver package that I've used for months up until the malfunction was CASIOUSBx64INST. I then downloaded from Casio a compatible driver...CASIO_XW-DJ1_Driver_2_26. Neither of these are showing up in my device manager or device window, yet they are indicated in my installed programs window. I'm using Windows 8.1. All of my other MIDI devices on the USB hub work perfectly. I've done extensive troubleshooting from cables and devices to isolate the problem. I've even reverted to Windows 8.1 from 10. Still no joy. When I turn on the keyboard there is no audible nor visual representation that the device is recognized. I'm at my wits end. Please help. Thank you in advance.