[SOLVED] HP Z420 turns itself on and immediately shuts down.

[Mertzwiller]

HP Z420 Windows 7 Pro.

The computer turns on by itself when I plug it into the wall, before I even push the power button. Then it immediately turns off, then on again.

So far, I’ve cleared out the dust, and reseated memory cards. Tried to reseat NVidia graphic card, but couldn’t figure that one out, so jiggled it for a few seconds. The computer worked for an hour or two after that, but then started to shut itself off, again. (Blue light turns off, the green light stays on). Pushing the blue light does nothing. I have to unplug the computer, and then re-plug it to get anything at all.

I'd greatly appreciate any suggestions or tips .

Thanks,
Mike

 

[SamirD]

When did this start happening?

 

[Mertzwiller]

When did this start happening?

it started three days ago. i thought it might have been due to static electricity caused by winter cold.

 

[SamirD]

Over time, things can corrode or just stop working like they should. I would reseat the memory as well as completely remove the gpu and reseat it as it seemed to make a difference last time. Be sure to fully unplug the system before you do any of these and make sure to press the power button a few times to drain out any current before you start.

 

[Mertzwiller]

Over time, things can corrode or just stop working like they should. I would reseat the memory as well as completely remove the gpu and reseat it as it seemed to make a difference last time. Be sure to fully unplug the system before you do any of these and make sure to press the power button a few times to drain out any current before you start.

Thank you, Samir. i will do as you suggest.

 

[SamirD]

Thank you, Samir. i will do as you suggest.

I also have a z420 so I'm familiar with the machine. It's robust for sure, so I'm surprised that it's even doing this.

 

[Mertzwiller]

I also have a z420 so I'm familiar with the machine. It's robust for sure, so I'm surprised that it's even doing this.

i, too. i'll let you know how it goes.

 

[Mertzwiller]

i, too. i'll let you know how it goes.

Your suggestion worked! I reseated gpu and mem cards, and voila-- I'm back in business! I also reseated cmos battery. Thank you, Samir.

 

[SamirD]

Your suggestion worked! I reseated gpu and mem cards, and voila-- I'm back in business! I also reseated cmos battery. Thank you, Samir.

Awesome! You're welcome! They're robust machines, that's for sure. Enjoy!