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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

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Posted on Jan 02, 2017

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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

  • 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

  • 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

  • 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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