Using WIN 10 on Lenovo ideapad 100 laptop have nagging, intermittent mic image with diagonal line from upper right to lower left. Sometimes it is not present for several minutes, and at other times it comes and goes on a 3-5 second interval. Interesting side note is that when it is visible, the keyboard is apparently disabled, i.e. if typing when it appears, likely the keystrokes will not be effective. Have searched every conceivable resource and followed all suggestions such as driver updates, device manager observations, control panel options verified, etc. etc. but to no avail. Cannot recall if problem began with any particular change or event on the laptop. I've been putting up with the issue for several months since this has not been a hi-usage or critical PC resource, and I did replace the battery a few months ago but not sure if this symptom began immediately afterward. i wonder if during the battery replacement exercise i might have disturbed or knocked loose a connection on the motherboard. If so, then i suppose i could retrace that battery replacement exercise and look for a possible clue. i must comment that the mic input is functional