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imtt321

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HP Pavilion DV6835nr shutsdown every 60 seconds!!!

I have a HP Pavilion D6700 Entertainment Laptop - s/n CNF8096CJW, p/n KN947UA, service tag dv6835nr, runninn Windows Vista Home Premium.

My problem is that my laptop shutsdown approximately every 60 seconds. I have installed a new motherboard, RAM and harddrive - and also replaced the power supply with a new HP factory power supply. Nothing seems to fix it. I can't even put the OS back on the machine because it won't stay booted long enough for me to start the install. Regardless of either putting the old hard drive in with the OS on it or putting a brand new blank hard drive the machine restarts after about a minute.

I have cleaned all connections to the processor and made sure nothing is impeading the flow of air as to not overheat the machine.

i have pllugged the laptop in with the battery in and with the battery out. No results.
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Britt Thompson
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About the only thing left is the LCD, optical and wireless card or bluetooth. Try disconnecting the LCD from the board and connect an external monitor, removing the optical drive and/or wireless card. You could also have a loose screw somewhere shorting out the board or a bad cable doing the same thing.
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Darren S

are you able to boot into the bios without it rebooting?
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i can boot to the bios but i only have about 25 seconds before it reboots
Have you tried pulling the RAM modules? If you have 2 pull 1 at a time and flip flop after trying to power it on to test for bad RAM.
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sorry, did that also - one at a time - still shutting down
It has to be something to do with the CPU/GPU cooler. Did you apply fresh paste to them? Did you remember to put the GPU heat transfer pad in?
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Britt Thompson
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will check all of that and update as soon as possible
Rebooting is usually a HEAT problem.

All so it could be some bad board level component (Processor).

Maybe get http://www.memtest86.com/download.html  burn it to a cd and test that memory.

All so try to make sure that the cooling fan is spining fast enough. You can put 1 drop of 3n1 oil in the center of the fan to lube it up, sometime the fan spins but not fast enough and needs lube.
does it stay running from a live cd  :
ftp://ftp.uni-kl.de/pub/linux/knoppix/KNOPPIX_V6.2CD-2009-11-18-EN.iso     Knoppix      
www.nu2.nu/pebuilder/                               BartPe
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havent tried the suggestions the yet - will do that today and update the discussion
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did all the suggestions that were presented - STILL SHUTTING DOWN

here is a few more things that i tired, took the hard drive out completely - powered the machine on, it shut down after about 5 minutes

reseated the processor and applied new compound to heat sink - still shutdown

the only thing i can think of is a bad refurbished MB

ANY OTHER SUGGESTIONS WOULD BE GREATLY APPRECIATED
If you look at the board inside the machine do the capacitors on the board look like they are bulging? Even a little bit? If they are, it's definitely a bad board. If you don't see any bulging caps it could still be a bad board and that would be my guess.
I am also thinking bad motherboard but I would definitely rip both sticks of ram out again.  check for anything clogging the connection and try a completely different stick (maybe lend on from a friends laptop) before writing that mobo off
Did you remember to put the pad back in between the Nvidia chip and the heat sink?
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yes i did - still shutting down

tried other known good ram - still shutting down also

goign to purchase a new MB and see what happens
if it shuts down when running Knoppix then it certain;ly is hardware
you can try to test, or replace parts
In that case the problem is that the Nvidia chip has to be reflowed. If you do it correctly, it will fix it every time.
There are several ways to do it as you can see here.
http://www.google.com/#sclient=psy&hl=en&newwindow=1&rlz=1W1GGLG_en&q=hp+pavilion+dv6000+reflow&rlz=1W1GGLG_en&aq=2m&aqi=g2g-m1&aql=&oq=&pbx=1&fp=7d8b10feeaab1c49

You don't have anything to lose by trying it.
edbedb - that links only opens google for me..
Sorry, I tested it and it should open a google search for "hp pavilion dv6000 reflow"
I did this for a customer last week.  The video below gives you enough info to get it done.   I used a hairdryer on and off for two minutes and it reseated correctly.  But after a week of use the guy reported to me that after prolonged use it must be left for a while to cool before it will work again.  I think my additional copper heatsink that I made was a little thin to be honest and so didnt keep enough pressure on the chip.  There is a website devoted to this issue also below which has information to claim money back from your supplier

http://www.nvidiadefect.com/

http://www.youtube.com/watch?v=bnkQNmKauEc&feature=player_embedded