HP Pavilion dv6800 wont turn on, won’t power on, no display, black screen problems

Laptop HP Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800. 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 Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800 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 Pavilion dv6800. The failed electronic component has to be replaced.

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

Motherboard dead; The HP Pavilion dv6800 motherboard has to be replaced.

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For other HP Pavilion dv6800 problems check the comments or write a comment.

2 thoughts on “HP Pavilion dv6800 wont turn on, won’t power on, no display, black screen problems

  1. nizar

    I got HP DV6800

    The main issue was that the optical drive was dead. When I first tested it, I plugged in a bootable disc and the drive spun it up just fine… but BIOS didn’t even notice that the drive even was part of the system.

    My first thought was that it was a dead controller in the dvd drive… to test it, I grabbed an old TEAC CD-rom drive and swapped it for the dvd drive.

    To my surprise, it didn’t detect that drive either. Exact same symptoms. I’m 99.9% sure the test drive is good…

    I looked through bios and all… no luck there.

    The drive connector looked to be in good shape… luckily, its visible from the outside

    Is there any known fix for this other than a new mainboard (I’m not counting external USB drives as a real fix)?

  2. Josef baroki

    well it is a dv series in my time dealing with them i have had few different symptoms due to reflow issues one was wireless refused to work till reflow, the most common is power up and no display, others have turned on for a sec and shut right down within 2 seconds, graphical artifacts, even had one where it would display to external fine but not its own display all was fixed with a reflow…..hp are hot running poorly designed beasts…i have found if you copper shim it and use high quality thermal grease you can drop temps down good 10 to 15 degrees Celsius some of them like the dv 2000 i had to cut a bigger hole for intake and used a heavy duty screen mesh to keep fingers and other unwanted things out and maintain ventilation …..though i will admit i have not ran into your specific problem but it would not surprise me it a reflow issue…..some of them have a extension board internally for the cd drive so you can with the board out connect the drive directly to the motherboard without that extension card see if it works..

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