Pavilion dv9429us power issue

Hopefully someone can help with this issue.

I'm not sure what is going on with my laptop.

It's a 2.2 GHz AMD Turion ™ 64 X2 Dual-Core Mobile Technology TL-64 w/ 4gb of Ram and NVIDIA GeForce Go 6150.

When I plug in the AC adapter cable, the battery charging light goes on.

Pressing the power on button brielfly lights up the media keys for about a second and then it shuts down. There's no hard drive activity, no optical drive activity and no fan.

By the 3rd time pushing the power button again, the fan does spin up briefly (very low rpm compare to regular powerup) but than shuts down..

I don't believe there's any hard drive failure but a power issue.

Any advice would be really helpful.

Thanks in advance!

 

99% of the time it's the NVIDIA GPU that's gone bad. You can find numerous tales of woe on this forum. Newer HP notebooks favor ATI.

 

Yea its probably the gpu. There are ways to DIY fix it(reflow), but its temporary at best. The only surefire way to repair it is to replace the motherboard in its entirety. Heres the guide I used to fix my F500 in need of reflow. Google Translate

 

Thanks for both your help.

The reflow project looks very intense..probably something someone like me wouldn't have the time/skill to do it.

Do you know if HP had a recall for this product?

I'll have to call and ask but they'll probably just try to deny the incident.

 

HP Limited Service Enhancement Information:

Check if your effected...
HP Limited Warranty Service Enhancement - HP Customer Care (United States - English)

 

Actually that sound more like the Nvidia NF430 chipset failing, since the laptop does not even power on. With a broken GPU you'd get warning beebs about missing GPU or garbled screen, lines or similar. I had my dv9014 do the both on different occasions.

For the end-user it's the same: motherboard needs to be replaced since all components are integrated.

For those wanting to try reflow, they might only try to heat the GPU while there's 1-2 other chips needing attention too.

All those Nvidia chips come from the same factories and used same materials and they will all fail but just with different results.

 

Normally its only the northbridge and the GPU that need to be reflowed. Alot of warranty computer service centers only do this.

With the HP's when the northbridge and gpu come loose the machine will load light up and turn off.

If you increase the cooling and put a penny to help conduct the heat you should be ok.

We do this all the time to the HP's in our office.