- generic desktop system mboard model, or brand name system model ?
- video adapter if it's not built into the mboard ?
- LG monitor model ?
RIGHT click on a blank part of your main desktop screen, choose Personalize, then Display settings.
What does it say there ?
What monitor on what video adapter ?
Preferably, you should have the specific monitor drivers loaded for your LG monitor model if it's an LCD or Plasma display, NOT Generic PNP Monitor !
The video adapter name MUST be correct !
Click on the display you're having problems with.
Change the resolution - pick one that fills the monitor's screen properly.
(When you have clicked on the problem display, you're adjusting the resolution for only that display.)
The display on the monitor will NOT change until you have clicked on OK at the bottom of the Display settings window.
The resolution should have the same ratio of width to height as your display does.
E.g. if it's 16:9, when you divide the first resolution number by the second one it should be = 1.7777 (to 1)
If this is an LCD or Plasma monitor, choose the Optimal or Native resolution the monitor is supposed to use if you can.
If you can't do that, choose the highest resolution you can that has the same width to height ratio, and
Turn on Clear Type in Windows XP or Vista or Windows 7 - makes type/fonts on LCD screens look clearer.
If the display doesn't look good enough to you at that resolution, if this is a desktop computer, get yourself a video card that WILL support the Optimal or Native resolution the monitor is supposed to use.