I have an error message on my screen which ios moving around. It says - 'not optimum mode. Recommended mode : 1280 x1024 60Hz'.

check you video graphic card option and select or fight the right resolution,otherwise update your video card and you can use this :

CLICK ME

here's the serial : JCCQ-MAKC-KACK-6TSE-BN35

Did you try to set it to 1280 x1024 @60Hz?
http://www.fixya.com/support/r4873371-fixing_out_range_format_not_supported

Unless there are problem inside, please post back.

Basic LCD monitor troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

What happen when you hook this monitor up to other PC that has the video setting 1280 X 1024 60 Hz? Just ant to narrow down the problem before opening up the monitor. You may have logic problem in the logic board. If it does the same with other PC, then open it up and inpsect the inside for such thing as failed caps on the logic board or on the main power supply board, I think more likely to be ROM chip on the logic board is scrambled.
See typical failed monitors: http://s807.photobucket.com/home/budm/allalbums

try to adjust resolution you monitor may not support higher resolution change it in the display properties

Ok, try another setting say 1024x768, 800x600 & see if that helps, what this means is for whatever reason "Windows" thinks that the current screen settings, aren't the best, for what is being "Run".

check if your monitor has an auto-adjust button, this will help you autoadjusting the recommended resolution so that there are no problems, if not, you can try to rightclick on windows desktop and go to properties>configuration, set the resolution there

Click START-SETTINGS- CONTROLL PANEL - DISPLAY - select the SETTINGS tab at the top - click onthe ADVANCED button (bottom right)- select the monitor tab- in the screen refresh rate dropdown box select 60htz- click on apply & ok - back at the display properties page , slide the slider for screen resolution to 1280x1024- click apply and ok. restart the computer. this show resize your desktop to the correct resolution and refresh rate recommended by your information.

Press F8 during startup to show the boot options. Boot to VGA mode (if available) or safe mode and change your resolution in windows to the recommended 1280X1080. To do this in XP just right click on the desktop and select 'properties', click on the right-most tab and move the slider.

In Vista this would be right-click desktop, select 'personalise', click 'display settings' and move slider.

Hope this helps,

erch.

Hi Guys.
I have had this problem and after a bit of searching found that it is a known problem.
Give Samsung a ring and if it's in warranty they will replace it

Kathryn, In the lower left, under the screen there is a row of buttons... One is labled "AUTO" have you tried pressing auto and if so does anything happen?? If not try pressing "MENU" first and then "AUTO"... What we are attempting to do is to get the monitor to accept the current settings so we can get the screen up and then deal with changing the resolution... In a Windows operating system the resolution is changed by going to "START" - "SETTINGS" - "CONTROL PANEL" - "DISPLAY" and in that window click on the "SETTINGS" tab and reset your resolution. This one might take some better communication that emails - because it would be easier to know in real-time how the monitor is reacting as you input various things... You can give me a call at 360-642-4993 or we can set-up a live chat. I'm assuming since you were able to place this post you have a second computer to work from? Bill