Quote: Originally Posted by bassfisher6522
When you unplugged the usb cable (key board), was the PC powered on? Sometimes doing so can cause such issues as you are experiencing. Generally a reboot will set things wright.
What does it look like in the device manager, are there any yellow triangles?
Have you tried using different usb ports with the extension cable?
When i unplugged the usb cable PC was powered on, and after that i rebooted PC few times, but still no results. In device manager there are no any yellow triangles, everything seems to work fine there, all usb ports are installed also as keyboard, but in some strange way is not accepted anymore through extension cable.
Also i tried switching to other ports but couldn't make it work.
Also i tried with usb stick on both extension cables and usb stick worked, but later on i tried with x-box controller and i got same problem working directly but no through the extension cable.
It seems that higher voltage is, it doesn't work, but it confuses me as it worked for few months and suddenly stooped.