Question : Problem: Second monitor suddenly not recognized.

Second monitor suddenly not recognized by system: windows xp sp2, nvidia, dual samsung monitors working fine; restarted computer, error message for cicero? came up. On restart desktop icons were placed differently and cannot get the second monitor to appear. Connections, etc are exactly as before. Problem doesn't show up in device manager.

Answer : Problem: Second monitor suddenly not recognized.

Have you tried nvidias display software? with trying to detect screens?