@davidp124
Try this ...
First, make sure you unplug the USB cable connecting your IC-R8600 to your PC/Laptop.
Secondly, you'll be uninstall everything.
(assuming you're using Windows 10) -- Go to Control Panel and open Programs and Features.
1) Look for
HDSDR v2.76a --
Uninstall it. (
a reboot maybe required, reboot if requested to do so)
2) Look for
Icom IC-R8600 USB I/Q Package for HDSDR --
Uninstall it.
I use the RT Systems WCS-R8600 Programming Software for the Icom IC-R8600 so the following Windows Driver Packages may not need to be uninstalled -- if you have these installed, leave them for the time being.
Windows Driver Package - Silicon Laboratories (silabenm) Ports (12/10/2012 6.6.1.0)
Windows Driver Package - Silicon Laboratories Inc (silabser) Ports (11/15/2017 10.1.1.1951)
Next, press the Windows key and press 'R' to open the Windows RUN window. Inside the RUN window, type 'CMD'.
Once the Command Prompt window has opened, type the following:
set devmgr_show_nonpresent_devices=1
then type:
devmgmt.msc
Once Device Manager has opened, click on '
View' and then click on '
Show Hidden Devices'
At the bottom of Device Manager, look for '
Universal Serial Bus Devices'
Expand this and you'll see this:
IC-R8600 I/Q OUT Port
IC-R8600 I/Q OUT Port (WinUSB)
Hover your mouse over both (one at a time, in no particular order), right click your mouse and select '
Uninstall'
A reboot maybe request but reboot your PC/Laptop anyway so click the Windows Start button, click on the Power Icon and then click on 'RESTART'.
Read the following documents from Icom and follow the instructions step-by-step exactly as printed to freshly install everything again.
Manual Downloads | Icom Inc
and this document ...
Manual Downloads | Icom Inc
Let me know how you get on.