Liquid crystal display Every time the power supply, showed normal 5 seconds on the emergence of black

17-inch liquid crystal display games in the black when the issue is now
symptoms are:Host open, open display of power, display, but about 5 seconds on the black screen appears, can not see anything
If the closure of the power display.Re-open display, and the normal 5 seconds, and then another black
repeatedly open display of power and repeated displays the normal 5 seconds if
open display, showed normal 5 seconds , Black, and this time pulled out of the host connection, the display will be “no signal” and other words prompted
also appears 5 seconds, and then continue to host black
no problem for the new machine is also true This
What is it?

display panel does not work, take a short break.