LG is a manufacturer of assorted electronics, including LCD monitors such as the M2762D. As monitors can consume a substantial amount of power when they are turned on, the default setting on your Windows 7 computer is to turn off the monitor after a certain period of inactivity. While this practice is helpful for reducing energy consumption, you may find it inconvenient when you are in the middle of working on a project. Fortunately you can configure your computer so that your M2762D monitor does not enter power-saving mode.
Click the "Start" button in the lower-left corner of your computer screen.
Click "Control Panel" on the right side of the menu.
Click the drop-down menu to the right of "View By," then click "Small Icons."
Click "Power Options."
Click the blue "Change Plan Settings" link to the right of your currently selected power plan.
Click the drop-down menu to the right of "Turn Off the Display," then click the "Never" option.
Click the drop-down menu to the right of "Put the Computer to Sleep," then click the "Never" option.
Click "Save Changes."
If your monitor is not waking from power-saving mode when you turn on the computer, there could be a problem with the monitor, the monitor cable or the computer. Take a different monitor from another computer in your home, or borrow one from a friend, and see if that monitor will work with your computer. If the new monitor also doesn't work, then there may be a hardware or operating system preventing your computer from booting up. Consult a computer repair specialist to determine the cause of the problem.