can't record

I am using Windows 7. Just using the mic from Toshiba laptop. I have no problem for the first recording. But in the second day, I got error message “Error while opening sound device. Please check the recording device setting and the sample rate.” I am just using default setting and make simple recording. I am an novice computer user. Is there any simple recording for starter? I have tried to change the settings but did not work. The help line does not address the problem. Thank you.

But in the second day

Still recording from the Toshiba mic?