Infrared not recognized

Thanks smile.  I agree that the stack looks OK.  The install / unistall looks clean.  I actually steeped through the registry and compared with the working system and noted the keys and values matched.  As part of this I also uninstalled the device from device manager, and rebooted so many times I lost count.  I also reset windows without deleting files as a sledge hammer, then reinstalled IRDa and the device still added as STIrx22.  This does not bind as if the OS does not recognize it as an IRDa device.  As I do not know how Windows translates the STIrx22 to the IRDa device in device manager, I am stuck.  Short of clearing the entire system and reinstalling a clean Windows, I cannot see much else to do.

OK please check that you have removed the drivers and not just un-installed the device.

When you remove the device select the "Delete the driver software for this device" check box.   This will remove the currently installed drivers.

I would start the machine without the device connected and then plug it in once running.

As an aside:  If the machine was running an OS before windows 10, or if at any time you might have installed drived from the installation CD, I would also check control panel just to make sure.

Thanks again smile. 

I can advise that there is no device driver in the failing system.  I connected the dongle and the system advises "Setting up STIr42xx", then "STIr42xx is ready".  After this, Device Manager shows STIr42xx under "Other Devices" (with an !).  Properties shows it has no device driver and an "install error" (key) =

"There are no compatible drivers for this device.

E0000228".

As there are no specific STIr42xx device drivers available (net or CD or ...) so I have assumed that the IRDa installation process installed (or linked) to one (direct or symbolic) that is part of the OS.  In Windows\System32\drivers there is no driver for STIr42xx and there is no reference at all to it in the file system under programs.

In device manager in my working system, it shows 2 device drivers as Microsoft supplied in Windows\system 32\drivers as irenum.sys and stusb2ir.sys, and these exist in that system. In the failing system in windows\system32\drivers, irenum.sys exists while stusb2ir.sys is missing.

As the file is a .sys file, it cannot be copied using a stick and needs to be installed from something.  Hence my though that it was part of he IRDa package or part of the initial OS install.

Do you know the source of these drivers, esp stusb2ir.sys?

Thanks for persevering with me on this as your feedback is helping me focus my analysis.

Peter

Having a quick look the stusb2ir is provided with the drivers for the SigmaTel STIr42xx IR USB device.   This would normally be provided by

Windows 10 Automatically from Internet.   Windows 7 installation Disk (8 could be either.)

There is a difference between the computer having a partial installation and no installation.  A partial will not trigger a reinstallation of these components.  You cannot just copy the files across as the installation procedure also adds some registry keys for the device to work correctly.

Can you try to:

1: If it has no drivers when plugged in then it might rigger a full installation.  Remove the device and reboot the computer.  At this point plug back in.

2: If you have a device with an exclamation mark, try on the device in Device manager select update drivers and see if it goes and finds one.  Use search automatically first; then windows updates.   And finally a disk if you have one.

3: Last chance is Windows 10 will often reuse the windows 8.1 (or 8 or 7 drivers) so if you have a provided CD for one of those, it is always worth a try, but this really is last resort as it is always better to use the windows 10 built in drivers.