Keybord mouse problem on HP EliteBook 850 G3

[Tomperys]

Hi,

I have issues with my keyboard and mouse. I Am using HP 2013 UltraSlim Docking Station (2xDP) and "a4tech bloody b418" keyboard and "Mad Catz RAT 7" mouse - both are plugged in the docking station. The problem is very weird (becuase its happening only sometime). When the mouse and keyboar are both in the docking station ports, the mouse is causing that the keyboard is reseting itself -> keyboards LED lights starts to flash every few seconds like if you just plug it in, the numlock turns OFF and when you typing it start to type in one point the letter you just pressed all over like if you would hold the key. It stops only when you press another key. So practicaly is not possible to write.

If I connect the mouse to the USB hub, the problems with keyboards stops (or at leat its not every few seconds - its more like minutes or tens of minutes. But unfortunately the mouse cursor keeps jam every few seconds like the keyboard before. I tried even different mouse (Gigabyte GM-M6880) and the problem is the same. When I disconnect the mouse, the keybord again have this restart issue only after tens of minutes....

There is nothing in event viewer (nothing I can see) and the only "wrong thing" in devices is "Programmable Root Enumerator" error - "This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)" related to MadCatz. But there are no new drivers for  MadCatz and the behavior also occurs with another mouse so I dont know how much this can be related.