Samsung PE40C user manual Check the followings, Installation issue PC mode

13 Troubleshooting Guide

13.1.3 Check the followings.

Installation issue (PC mode)

The screen keeps switching on and off.	Check the cable connection between the
	product and PC, and ensure the connection is
	secure.
Blank spaces are found at the top and bottom	Blank spaces on the screen are not caused by
of the screen when an HDMI or HDMI-DVI	the product.
cable is connected to the product and PC.	The cause of the problem is the PC or graphics
	card, and can be fixed by adjusting the screen
	size in the HDMI or DVI option of the graphics
	card settings menu.
	If the graphics card settings menu has no
	option to adjust the screen size, update the
	graphics card driver to the latest version.
	(Please contact the graphics card or computer
	manufacturer for details on how to adjust the
	screen settings.)
PC is shown in Source when a PC is not	PC is always shown in Source irrespective of
connected.	whether or not a PC is connected.
Screen issue
The power LED is off. The screen will not	Make sure that the power cord is connected.
switch on.	("2.2 Connecting and Using a PC")
"No Signal" is displayed on the screen (refer	Check that the product is connected correctly
to "Connecting to a PC").	with a cable.
	("2.2 Connecting and Using a PC")
	Check that the device connected to the
	product is powered on.
"Not Optimum Mode" is displayed.	This message is displayed when a signal from
	the graphics card exceeds the product's
	maximum resolution and frequency.
	Refer to the Standard Signal Mode Table and
	set the maximum resolution and frequency
	according to the product specifications.
The images on the screen look distorted.	Check the cable connection to the product.
	("2.2 Connecting and Using a PC")

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