Laptop turns on off on off on off--wont stop!!

[contsak]

This issue sucks bigtime..

Mine is a DV 9700...had it for 2 years.

Last year, the CDROM went missing...not in device manager...gone....tried everything

Now I get this on/off problem I resurected it twice by taking out the batteries etc, works fine for a week or so then goes again.

What is the lated with HP, have they recognised this as an issue? Is this happening to newer model?

Well iat least i have a good boat anchor for my tinney..

[computergnome]

Same issue with a clients Laptop 9700 serial number CNF####*#*

Tried everything on this forum thread, only got into the bios once after swapping HD out. Then machine went back to going on and off. Will try to update BIOS.

[Bebopfox]

What a big disappointment!! I am so very mad at HP right now!!  I had faith in them 'til this crazy on off on off powering shut off issues starting happening...I cannot even do a system recovery!  You can guarantee the next laptop I purchase will not have HP nowhere on it!  HP for HALF PRODUCT!!

[pekklenky]

I have the same problem and got so mad. Tried to resort to HP, but it was just waste of time.

So I researched and found that there is a class action going on.

You may be eligible. Please check out

https://roscomps3.securesites.net/www.nvidiasettlement.com/claimform.php

Act fast since the web site says ...

Claim Filing Deadline: Postmarked by March 14, 2011

[Dangvm89]

Problem:

This is a known issue that has recently happened to my hp laptop 6707us. The problem started out with monitor pixelation, then the black screen, then the "turning on and off" cycle that everyone has been experiencing. The only way to boot up the laptop was to remove he CMOS battery (I dont have a laptop battery) and the AC plug. I was able to use the laptop just like before, however, it was slighly slower and the audio was distorted. The laptop would be functional until it is either restarted/put to sleep/shut down then the process of removing and draining power would have to repeated to achieve a successful boot up once more. 

Solution:
After some researching, I discovered that this was a gpu/video chipset related issue where the nvidia chip itself needed to be reflowed due to heat cycles that have disrupted its heat transfer/connection to the motherboard. I disassembled this laptop using this video: http://www.youtube.com/watch?v=kOdmGuiq1l8&feature=youtube_gdata_player (but there are plenty others). After disassembling it I had access to the motherboard and took off the main heatsink for both the CPU and GPU. I cleaned off the old thermal paste on the CPU and cleaned the heatsink and fan as much as possible. For the GPU, I applied direct heat on the chip using a heat gun for about a minute or so using low-level heat for 45 secs and high-level heat for 15 secs. After it cooled down, I put the heatsink back on with new thermal paste on the CPU and a clean heat transfer pad for the GPU (I washed the heat transfer pad that was used on the nvidia chipset with water and let it airdry).

Connected the monitor, keyboard, mouse and I tested it; everything worked. I'm typing this message on my laptop now. This method worked for me, however, some others were able to achieve the same results by replacing the GPU's heat transfer pad with copper shims. In addition, the copper shims and GPU would also need the application of thermal paste. Hopefully these results help and I will try to keep you all posted.

[Hack_Benjiman]

i don't know what could have done this, but the day it messed up, it was sprinkling outside so my backpack was slightly damp. i also exchanged my motherboard/RAM with my dads laptop, which also fit into my computer...

i took it apart and checked all of the connections, but that didn't work

Please help with my problem

[dhuevos]

I was given this laptop to fix for someone.. I only do Macs but will repair a pc when needed.. i tried all the suggestions in this thread and finally got it to work by removing the laptop battery and holding the DELETE key while powering on.. i had to do this up to 5 or 6 times as described by another poster. at first the bios screen came on for a split second and it shut off which was a lot more than i was able to get it to do previously. i tried one more time and got it to show me the SAFE MODE options screen.. tried safe mode and it did the usual screen after that and everythin went fuzzy. powered it of then powered on again and let the system repair finish and restarted and havent had any problems with it after that.. hope this helps someone out. 

I also kept unplugging and plugging it back in when trying to hold down the DELETE key and powering on.. not sure if that was necessary but that was my procedure.

good luck

[Hack_Benjiman]

You kept unplugging what...

I havent tried it yet, but hopefully it works

Thanks for the info

[dhuevos]

i kept unplugging and plugging the power adaptor right into the laptop itself

[Hack_Benjiman]

was the battery in?