error when opening sound device

please check recordingdevice settingns. i don’t know what more to check. I lhave sound coming into my laptop,and playing through it being monitored. Laptop audio controls seem OK. I have installed the plugins for audacity. I cannot tell where else to go on this. I hit the red record, with external sound coming in, and it gives that error.

Which version of Windows you are using?
which version of Audacity (from “Help > About Audacity”)

Windows 7, and the latest.
This all becomes irrelevant because I went to the NCH Wave Editor which I already had, and it worked the instant I started that app,
So we won’t continue trying to work out why I wasn’t getting what I wanted.