Do you know what this computer sound is?
From time to time my work computer makes a sound very much like when you run your finger around the rim of a wine glass. Very high pitched crystal ringing noise. It often does it when I reboot it in the morning, and after about an hour it quits. Our IT person can't hear it (I have very acute hearing). Nothing's going to get done about it, but I was just curious if anyone knew what it might be. It bothers me so much sometimes that I manufacture something to do outside my office for the first hour of the day till it quits.