Asus X555L wont turn on, won’t power on, no display, black screen problems

Laptop Asus X555L won’t turn on, won’t power on, there is no display, just a black screen. This is a general diagnostic and repair steps to fix those problems.

Troubleshooting laptop Asus X555L won’t boot, won’t power on, no display just black screen

When you push on the Power Button the Power led lights ON or NOT, your Asus X555L won’t start up, and there is no display just a black screen. Possible problem and the fixes steps:

Battery has no charge left + AC adapter failed; you press the power button on laptop Asus X555L nothing happens, laptop won’t turns on and there is no display, the battery has no charge left, the motherboard doesn’t receive any power, laptop cannot turn on. You plug in the AC adapter but that doesn’t help, your laptop Asus X555L still won’t power on, there is a chance you have failed AC adapter. In this case try with another charger or check AC adapter with a Multimeter. If it’s dead, replaced with a new one.

Power circuit in wrong state or Over volt protection trips; you press the power button but nothing happens, laptop Asus X555L won’t turns on and there is no display just a black screen, your laptop has static electric charge made power circuit in wrong state. Unplug AC adapter, take out the battery and hold down power button for 30 seconds, the static charge will dissipate. Plug in the AC Adapter and turn on your laptop Asus X555L. This should restore the system to normal operating mode.

Hardware failure; the laptop powers on, but there is no display just black screen with Power led lights ON or your laptop Asus X555L stock on logo or restart. In this case, it’s possible one of the Hardware failed. You can try to disassemble the laptop to bare minimum and try to reseat the hardware one by one and power on the laptop every time you reseat a hardware, to know the failed one, replace the faulty hardware.

Screen faulty or bad video cable connection; laptop Asus X555L turns on, but screen is black, with Power led lights ON. Test the laptop with an external monitor connected to the HDMI port, VGA port, press the appropriate key to switch to it. If the external monitor works fine and load the operation system, most likely you have a faulty screen or bad video cable connection. Check them and replace the faulty one.

BIOS failed; Laptop Asus X555L won’t turn on at all, if the voltage 19V, 3.3V, 5V OK  and electronics components on the motherboard are good, there is chance you have failed BIOS. There is a signal test confirmation on EC/SIO pin name RSMRST# . This pin must available 3.3V(tolerance 10%) than Bios Confirmed OK. If the test failed reprogram or replace the BIOS chip.

Laptop Power System has problem: Laptop Asus X555L won’t turn on at all, probably some electronics components or chipset on the motherboard failed;  Disassemble the laptop and take out the motherboard. Ceck No burnt marks visible on the mainboard. Check chepset temperature (CPU,  GPU, Power-Supply IC …). Check power jack. Check motherboard receives 19V. with a Multimeter measure voltages on coils, check for any components shorted to ground.  checked 3.3v/5v is up and running?

If you  have 3VALW And 5VALW at coil. 3VALW should go to sio and from there you should get 3v at power button. Check SIO for corrosion,shorting or any componenets which looks suspect. Check 3 & 5v SUS voltage.

Will need an electronic boardview or Schematic Diagram for Laptop Asus X555L. The failed electronic component has to be replaced.

Note: (In the comments we will be updated electronics components failure).

Motherboard dead; The Asus X555L motherboard has to be replaced.

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For other Asus X555L problems check the comments or write a comment.

One thought on “Asus X555L wont turn on, won’t power on, no display, black screen problems

  1. tarik

    Good day folks. Very strange issue I’ve got with an Asus lappy here. I haven’t heard or seen something similar before so it’s very difficult to track down.

    Here goes: when I got it, the battery was bulged on the inside of it. It was pushing against the touchpad, so that’s the initial issue the owner reported, as they had no idea the battery was causing the back-pressure. I took it apart, removed the blown battery and left it without one since it runs just fine on the AC adapter alone. Meanwhile, the chaps said they’d like a new battery put it after I told them it’s blown, so fair enough, they pay me, I order it up and after a long wait the battery turns up.

    I install it and try powering up the thing. It does come on, but now there’s no backlight…as soon as I plug the AC adapter in, the backlight instantly comes on…can’t remember if the bulged battery did this. I can’t recall if it had any bit of life left in it and turned on at all.

    Something’s very wrong inside, so now I’m kinda stuck with a fairly expensive battery and a laptop I can’t charge money for…..the schematic isn’t very helpful because like most laptops, the PCB isn’t marked, so I have no idea where to look first or what’s causing the issue…I get 19v on pin 1 of the LVDS cable when plugged in and the backlight is on, which indeed goes away when I pull out the cord and it fluctuates 1-3v…the laptop keeps on going just fine, but the backlight doesn’t switch over. The only schematic I found is this one, though I’m not sure it’s for the proper board, since it’s not mentioned anywhere. Just in case someone has a brainy idea or has encountered this before….again, very difficult. I can provide pictures if need be. Cheers and thanks.


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