Samsung NP-Q35 User Manual page 140

Q12 The picture is abnormally displayed on the screen when the computer is
resumed in Standby mode.
A This may happen when the CRT is set as the Primary device in the Extended
Desktop Settings.
When the CRT is set as Primary and the LCD as Secondary, the picture may be
displayed abnormally if the system enters Standby mode, is restarted after
disconnecting the CRT and the resolution is changed. It is recommended setting
the LCD as the Primary Display Device.
Troubleshooting 121