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Windows 7: Hp pavilion DV7-1050ea

07 Jan 2014   #1
benjy206

Windows 7 Ultimate 64-bit
 
 
Hp pavilion DV7-1050ea

Hi everyone.

Really need your help. Have a customers laptop which is a hp dv7. It tries to power on but shuts down striaght away.

It will only does this which the battery and charger in. If you have out the battery it wont do anything.

I have stripped down the laptop multiple times to check all cables including changing thw DC jack. The motherboard is getting power. If needed I can upload a video.

Will change the motherboard but just want to make sure.


My System SpecsSystem Spec
.

07 Jan 2014   #2
badger906

Windows 7 Ultimate x64, & Mac OS X 10.9.2
 
 

have you tried a different battery charger? maybe its not giving enough power to power it up, and its using both the batterys remaining charge and what its kicking out, but the low voltage detection kicks in?
My System SpecsSystem Spec
07 Jan 2014   #3
benjy206

Windows 7 Ultimate 64-bit
 
 

Yes I have tried about 7 different HP chargers and universal ones too.
My System SpecsSystem Spec
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08 Jan 2014   #4
benjy206

Windows 7 Ultimate 64-bit
 
 

Any other help would be great please.

Also when you leave the charger in for a length of time it will power on with the battery in it. But will not charge the battery. So it is powering on now.
My System SpecsSystem Spec
08 Jan 2014   #5
badger906

Windows 7 Ultimate x64, & Mac OS X 10.9.2
 
 

then id say it has dodgy capacitors that arent or struggling to hold voltage. its a bit beyond my technical knowhow to suggest a test for that lol
My System SpecsSystem Spec
09 Jan 2014   #6
benjy206

Windows 7 Ultimate 64-bit
 
 

Just doesnt seem to be them though. The fact that when the battery is out there is no power at all. To test them I would have to desolder the capacitors out and check to see if they hold the voltage. But I just cant get my head around it.
My System SpecsSystem Spec
09 Jan 2014   #7
Kari

Microsoft Community Contributor Award Recipient

Windows 8.1 Pro with Media Center
 
 

This is a quite common HP "feature", I've had about the same with all DV-7 laptops I've had (total of three).

HP recommends for this a so called "total power reset". I can confirm it has helped me to get a DV-7 to work again quite often.

Try this:
  • Disconnect battery, charger and all external devices
  • Press and hold down the power button for at least 20 seconds
  • Connect the charger, boot
  • After successful boot, shut down
  • Insert the battery (power cord still connected), boot
  • After successful boot, shut down
  • Reconnect external devices
Notice that my instructions differ slightly from the instructions from HP (Performing a Hard Reset or Forced Reset | HP® Support). My instructions are based on my own experience with various methods and have as mentioned above worked for me.

Kari
My System SpecsSystem Spec
09 Jan 2014   #8
benjy206

Windows 7 Ultimate 64-bit
 
 

Thanks for the reply. But unfortunately I have tried this. But when the battery is out it wont do anything for me what so ever. Any ideas why.
My System SpecsSystem Spec
09 Jan 2014   #9
benjy206

Windows 7 Ultimate 64-bit
 
 

Just noticed this beside the CPU and battery connector. When battery is in there is a slight click coming from this area.
My System SpecsSystem Spec
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 Hp pavilion DV7-1050ea




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