Dell Inspiron 15 N5050 wont turn on, won’t power on, no display, black screen problems

Laptop Dell Inspiron 15 N5050 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 Dell Inspiron 15 N5050 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 Dell Inspiron 15 N5050 won’t start up, and there is no display just a black screen. Possible problem and the fixes steps:
Battery has no charge left with AC adapter failed; you press the power button on laptop Dell Inspiron 15 N5050 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 Dell Inspiron 15 N5050 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, (How to check AC adapter with Multimeter).
Power circuit in wrong state or Over volt protection trips; you press the power button but nothing happens, laptop Dell Inspiron 15 N5050 won’t turns on and there is no display just a black screen (AC adapter is OK), 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 Dell Inspiron 15 N5050. This should restore the system to normal operating mode.
Screen faulty or bad video cable connection; laptop Dell Inspiron 15 N5050 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 or any Display port, press the appropriate key to switch to it (Fn key + F4 key in most laptop). 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.
Hardware failure; the laptop powers on, but there is no display just black screen with Power led lights ON or your laptop Dell Inspiron 15 N5050 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.
Power button failed; When you plus in the AC adapter the charge led lights on, (and there is no static charge), but laptop won’t turn on when you press the power button. Probably you have a Power button failure. Disassemble the laptop and with Multimeter test Dell Inspiron 15 N5050 power button (ON/OFF) Continuity, if there is no continuity when you push on the power button. The Power button has to be repaired or replaced; you can also try to short the power button borne with conductor wire to see if laptop turns on, (How to Test Power Button).
Some electronics components or chipset on the motherboard failed; Laptop Dell Inspiron 15 N5050 won’t turn on at all. Disassemble the laptop and take out the motherboard. With a Multimeter check electronics components continuity, Voltage and Chipset temperature, you will need an electronic Schematic Diagram for Laptop Dell Inspiron 15 N5050. The failed electronic component has to be replaced, (How to test Laptop Power System).
Note: (In the comments we will be updated electronics components failure).
BIOS failed; Laptop Dell Inspiron 15 N5050 won’t turn on at all, if the Power System and electronics components on the motherboard are good, there is chance you have failed BIOS, reprogram or replace the BIOS chip (How to reprogram (Flash). Laptop BIOS).
Download Dell Inspiron 15 N5050 BIOS .bin rom file
Motherboard dead; The Dell Inspiron 15 N5050 motherboard has to be replaced.
For other Dell Inspiron 15 N5050 problems write a comment.

10 thoughts on “Dell Inspiron 15 N5050 wont turn on, won’t power on, no display, black screen problems

  1. krato

    I need schematic diagram for dell inspiron n5050
    my customer bring me her laptop Dell inspiron n5050
    its not powering and not charging,
    when i put charger the power indicator light blinking every 5 second
    hope any one can help me
    thanks in advance

    Reply
  2. salim

    Have found PR4002 shorted to ground and upon removing it found PG4003, which is one of the pads PR4002 sits on, shorted also. PG4002 is not shorted. Does this mean PC4002 or PC4024 is the problem? Can I remove them both just to see?

    Reply
  3. salim

    Found the shorted cap with my power supply, took 3 amps to show itself! Removed it, short is gone and now have standby power! Part number off the schematic is SC10U25V5KX-GP, is that what I search for? Because google leads me to datasheet archive and I’m not sure what I’m looking at

    Reply
    1. Josef baroki

      10u 25v. Ceramic caps are not critical at all, you simply remove one of the same size from a scrap board and it will do.

      Reply

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