Samsung SyncMaster 244T Owner's Manual page 72

then contact the Service Center or your dealer.
Judging the monitor's working condition
If there is no image on the screen or a "Not Optimum Mode","Recommended Mode : 1920 X
1200 60Hz" message comes up, disconnect the cable from the computer while the monitor is still
powered on.
If there is a message coming up on the screen or if the screen goes white, this means the
monitor is in working condition.
In this case, check the computer for trouble.