Clear Thumbnails and then recycle power, turn off for 30 seconds and power on again:
Setup > System > Media Library > Clear Media Library
Also, default setting only has re-index when device is in standby mode

Technical notes, and other ideas.
Clear Thumbnails and then recycle power, turn off for 30 seconds and power on again:
Setup > System > Media Library > Clear Media Library
Also, default setting only has re-index when device is in standby mode