BSOD means Blue Screen Of Death
This blue screen of death is a notification of the Microsoft Windows operating system if something has gone wrong (and what is not automatic restore). The screen consists of a blue background with white text. BSOD is not a official denomination but is by the frequent occurrence and severity of the error so appointed. Most memorable is the BSOD that occurred during a Plug and Play demonstration of Windows98. The only solution is often a restart of the computer.
Windows 98 Blue screen of Death [YouTube] TGLhuF3L48U [/youtube]
Many people make a picture when there is a BSOD in a public place to see, so here some pictures