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Why hp dv3 doesn't turn on

Hi, i have an hp dv3 4101sl and yesterday i tryed to clean the fan and the dissipator sistem from the dust layer that formed during the last two years of use. After disassembling the laptop (i did that at least 100 times before, with different models of laptop and desktop) i've cleaned everything and i reassembled the laptop to check the working temperatures after this operation, the laptop turned on normally but after 2 minutes it switched off without any "beep" or warning message. After that the laptop completely died. the power button has no more light at all when i try to switch on the laptop, I've read about the hard reset procedure (unplug every kind of external device,unplug battery and power supply, and keep pushed the power button for 1 minute) and i've tryed to perform it as well but, even in this case, nothing happened. I've read that some times adding electroconductive thermal paste(too much) on the gpu/cpu units may cause short circuit on the motherboard but i didn't put any new thermal paste on my laptop. The only thing i can tell is that if the power plug is connected, the "power plug light" on the side of the laptop switch on normally but when i try to push the power button the light switch off immediately. Is the mother board shortened?is there something i can do to save my laptop?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

antiochpc
  • 1314 Answers

SOURCE: Compaq Presario 4400us

Either the new power supply you purchased is not functioning correctly. But, assuming it is now that you are getting some form of power to your PC, it is very likely the motherboard. Whatever fried your old power supply (or it could have just been the power supply itself) most likely fried your motherboard in the process. Probably not the CPU since the MB can't even post.

Posted on Jun 21, 2007

nai6378
  • 58 Answers

SOURCE: AUS A7N8X -X Mother board AMDAthlon 27648 CPU No picture

if this is a built sustem out of the box with old monitor try another monitor oddly enough some arent compatible, you can check by looking at the prong patern.

Posted on May 10, 2008

  • 1 Answer

SOURCE: won't power up

It has to do with the KT-600 series "anti burn regulator" and how it has a hard time with the XP2600 thru 3200 CPU's because they get so hot so fast... Try pressing the power on button again immediately after the long beep ends. Your computer should boot right up. Or, you can disable the ABR by removing the jumper from the pins on the motherboard. I haven't tried this because I like knowing the ABR works so good. It only takes a second or two to fry a CPU.

Posted on Aug 16, 2008

frcs68
  • 1605 Answers

SOURCE: Computer will not boot up.

remove all external devices. except the memories.
turn on the PC.
it if comes on insert each of the external device one at a time, till you come across the one that is causing the problem.
if it doesn't come on, remove the memories. and swap the memories. if it still doesn't come on, remove the memories. and see if the BIOS come sup. if it doesn't, then you have motherboard problem.
go back and check all connections. make sure the connectors are in right orientation and not pins are missing.

Posted on Nov 03, 2008

shibuda
  • 1812 Answers

SOURCE: Asus M4A785-M will not post.

All I read properly .Please remove power supply from HDD and CD /DVD RW. If you face the same problem Open the mother board on a open place and try it again ,because there are some particles witch has made the short sercit in your M. Board.Cgeack all voldage socket plkaced properly,MAY BE CAN SILLY MISTAKE FOR 4 pin socket .


If you face same problem please install in another mother board .Post me please imediate next result.

Posted on Dec 12, 2010

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Hp pavilion dv3


It looks like there is a short somewhere inside the laptop. Could be the mobo, or just about anything else connected to the power supply.
Try disconnecting the power connector on the mobo, then try plugging in the power plug and see if the light still goes out. If it does not go out, then the problem is the mobo. If not, then somewhere else. Try disconnecting the power from one component at a time to eliminate the various components. Also look for wires that are shorted together or connectors that are inserted improperly.

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If the fan making a smooth spin, but the noise is too loud, then it means the fan is trying to dissipate the heat. Probably the air inlet and or the air outlet (also the fan itself) is dirty (or clogged) and you need to clean it up using a canned air.
You may need to open the case/body if the dust become a dust ball (and you need a tweezer and qtip to pickup the dust ball and clean up the fan blades).

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how did you clean by hand ?
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Test all leads power and data that attach from motherboard to your hard drive,IDE,SATA

make sure all of you your drives power and data leads have secure connections

make sure the CPU central processing unit has a dust free secure seating

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I would try and blow out the dust from the machine, a build-up of dust can cause the laptop to overheat and that could cause the machine to shut down. Often times the fan gets caked with dust and cloth fibers from having it on your lap. If the laptop can't get enough cool air, it overheats and shuts off to protect itself from damage.
Thanks, and have a great day!If my solution helped you, please don't forget to leave positive feedback!

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Honestly, try harder. If you've taken the thing apart, you're more than half way there. You probably just need to unscrew more stuff and pry more parts out.

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1 Answer

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How to Replace a HP Pavilion dv3 Fan?

1. Follow your laptop owner's manual and assembly guide carefully you can download this from HP web site as you disassemble the laptop. Touch something metal periodically to remove static charge, and work on a large table with a bright light source.

2. Turn off the laptop and unplug it. Remove the main battery, CD/DVD drive and the hard drive. The hard drive is usually located in a slot on one side of the laptop. Remove the screw that holds the cover in place, then pull out the hard drive sled.

3. Turn the laptop over and remove the screws on the bottom that hold the keyboard in place. Flip the laptop over, open it, then lift the keyboard up and out. Unplug the flexible ribbon cable that connects the keyboard to the motherboard.

4. Remove the screws that hold the keyboard bezel and palm rest in place. Carefully pry loose any plastic snaps on the sides, then lift the bezel and palm rest up and out.

5. Unplug the HP Pavilion dv3 Fan Cooling Fan. Remove the screws that hold the heat sink and fan in place, then remove the entire unit from the laptop. Remove any thermal compound residue from the bottom of the heat sink and the CPU.

6. Apply a thin layer of thermal compound on the CPU, then replace the heat sink and fan. Replace the screws, plug the HP Pavilion dv3 Fan back in, then reassemble the laptop.

7. Plug the laptop in and turn it on. After you use it for a few minutes, you should hear the new fan running and feel warm air blowing from the vent on the side of the laptop. A HP Pavilion dv3 Fan does not run continuously, so don't be concerned if the HP Pavilion dv3 Fan shuts off periodically.

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