HP G62 wont turn on, won’t power on, no display, black screen problems

Laptop HP G62 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 HP G62 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 HP G62 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 HP G62 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 HP G62 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 HP G62 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 HP G62. 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 HP G62 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 HP G62 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 HP G62 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 HP G62 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 HP G62. The failed electronic component has to be replaced.

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

Motherboard dead; The HP G62 motherboard has to be replaced.

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For other HP G62 problems check the comments or write a comment.

6 thoughts on “HP G62 wont turn on, won’t power on, no display, black screen problems

  1. Deni

    my laptop HP G62 have a strange problem at press power button the laptop power on for one second the fan work and the wifi indicato on in orange color and immediatly power off and one second later qutomatically power on and power off continually. I have see the mb and not see any componet damage fisically, waths append ? thanks

  2. helppard Post author

    you should reprogram the bios chip 1st, cause it is a common fault on these kinds of laptops. That being said there is a chance that the laptop is in a protected state due to overheating and the north bridge might as well be fried.
    And try to be sure of the Charger you are using, it has to be an hp 90W psu.

  3. Deni

    I did not find any dump, do you have one?
    when this happened the pc issued a distorted sound and got stuck, when then I restarted it did this phenomenon

  4. govani

    There was a problem in the laptop g62 but solved by flashing the bios but the device does not enter the setup and some buttons on the keyboard not work, I changed the keyboard but doenst help. the problem still.


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