The Jargon File (version 4.4.7, 29 Dec 2003):

BSOD
 /B?S?O?D/

    Very common abbreviation for Blue Screen of Death. Both spoken and
    written.


The Free On-line Dictionary of Computing (30 December 2018):

Blue Screen of Death
BSOD

    (BSOD) The infamous white-on-blue text screen which
   appears when Microsoft Windows crashes.  BSOD is mostly seen
   on the 16-bit systems such as Windows 3.1, but also on
   Windows 95 and apparently even under Windows NT 4.  It is
   most likely to be caused by a GPF, although Windows 95 can
   do it if you've removed a required CD-ROM from the drive.
   It is often impossible to recover cleanly from a BSOD.

   The acronym BSOD is sometimes used as a verb, e.g. "Windoze
   just keeps BSODing on me today".

   (1998-09-08)