you get a free tech support through DELL call tech support if you are still in warrenty or not they maybe able to fix it
Please excuse my lack of geek speak......(I'm not a professional)
My Latitude C840 Laptop's resolution settings are 1024 X 768. Everything was fine until last night after I closed my laptop's lid and then opened it again. Suddenly my desktop area was drastically reduced and sent to the middle of the monitor. I checked the settings and even though the text and icons were barely legible the settings were still showing 1024 X 768.
I restarted the computer and my screen went back to normal, but 1 second later the desktop shot back to the middle of the monitor screen leaving a black 3 inch border between my desktop and the edge of my laptop monitor.
I can get my regular desktop back by changing the settings to something else, then changing it back to my default resolution. (Even tried re-booting hoping to save the settings but when windows starts all is normal again but only in that first second.)
Does anyone have any idea what is wrong?

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