Blue Screen of Life
(BSOL, by analogy with "Blue Screen of Death") The opening screen of Microsoft Windows NT.
This screen shows the file system loading, and any problems such as conversions from FAT to NTFS or a scan of a hard drive.
The Blue Screen of Life occurs in one way, as opposed to the Blue Screen of Death, which can occur in many different ways and times.
[Is this term ever used in connection with Windows 3.x or Windows 9x?]