LCD Screen Fault, reseat the LCD cable.
Remove the hard drive and optical drive.
LED Light Code, component Causing No post, possible Solution(s).Reseat the memory sticks.USB Controller Fault, unplug the USB devices.For diagnosing LED light codes you need to: Power on the laptop or code promo marie claire trousse restart it if it is world series of poker promotional code already.Motherboard / System Board Fault, replace the motherboard / system board.Replace the motherboard / system board.RAM Memory Fault, reseat the memory sticks.Replace the failed component.

Hard Drive / Optical Drive Fault.
These tests are called post or Power On Self Test.
Identify the correct flashing light sequence.Modem Fault, reseat the modem.When a laptop or computer first powers on, it goes through an initial set of diagnostic tests to make sure vital components are preforming correctly.Replace the LCD screen.Option ROM Fault, reseat the ROM device.Replace the ROM device.Then the optical drive and test.RAM Not Detected, install the memory sticks.