HP Pavilion dv9700z powers off during or immediately after POST

My aunt brought me her brother's computer that inexplicably stopped working. She told me if I could fix it I could have it, and she ordered a new HP.
The computer in question is an HP Pavilion dv9700z entertainment PC. The problem is that it powers itself off shortly after powering on. Usually this occurs during power-on self-test (POST), while the HP Invent splash screen is displayed. On occasion it gets a bit further, like if I press F10 to go into the BIOS to check the logs.
I thought if I could get into the BIOS logs, perhaps there'd be a clue as to the problem, but the one time I could get to the log, there was nothing unusual; there was one entry that said success but the machine powered off before I could read it.
I completely disassembled the computer to check for obvious problems (i.e. a disconnected cable, blown/swollen/leaky capacitor, burn marks) but there was nothing visible--except for plenty of nicotine "tar" on the fan blades and on the heatsink. I asked my aunt if my uncle was a smoker and she said a heavy smoker. That explains the nicotine I found.
The question is this: why would the machine power off within 30-60 seconds of being powered on? Even if I let the machine sit for hours in a cool location--that seems to rule out overheating--the same problem persists. Power down occurs within 30-60 seconds every time.
The fan does run, but sometimes it shuts off before the machine powers down...that seems odd. My wife has a dv9xxx and the fan NEVER shuts off completely.
I disconnected several components to rule them out, like the wi-fi card, hard drives, memory, etc. but the problem persists.
I've come to the conclusion that it's one of these three that's the problem: fan/heatsink, motherboard or power button board (sticking, perhaps)? I checked all cable connections and used rubbing alcohol on some contacts to clean off what appeared to be nicotine tar, waiting a full day before powering anything on. The problem persists...
Thoughts anyone? If it's the fan/heatsink or power button board, it'll be totally worth the repair cost and effort which I can do myself. If it's the mobo, probably not worth it.
Danke,
Matt

I was wrong. After a day of the computer working seemingly correctly, the same problem returned.
I am thus at a loss of why this laptop keeps shutting off. Is there a temperature sensor on the motherboard or airflow sensor that is perhaps obstructed by niccotine?
I'd like to get it working again if I can do so myself. But I wonder if it's just a lost cause...

Similar Messages

TS3694 So I have an iphone4g in recovery mode. followed all the steps to the T. Error pops up in itunes 1602. Prior it was powered off during erase all content and settings mode waiting to reboot

So I have an iphone4g in recovery mode. Followed all the steps to the T. Error pops up in itunes 1602. Prior it was powered off during erase all content and settings mode while waiting to reboot. Now its back to the apple logo. Any ideas if powering it off during the erase all content damaged the software?

You should really read the manual.
"How do you restore from backup? "
Restore. When given the choice, choose to use backup.
"And how can I check to see if the pics and videos are on my computer somewhere first??"
They would only be where you put them. What program did you use to import them? Pics/vids taken with ipod are not part of the sync process at all. You should be importing them just as you would with any digital camera.
If you did not import them, then they are not on your computer.

Equium A300D suddenly powers off during use

I just got an Equium A300D about 3wks ago and it suddenly powers off during use.
What can be caused this?
Though it doesn't do it frequently but am still very concerned.

Sounds like its overheating. My previous laptop did a similar thing.
Is the laptop used in a dusty environment? Perhaps there is dust buildup in the heatsink.
When you use the laptop, are the vents covered by other objects?
Otherwise if its not an overheating issue, and you are using the original Toshiba AC Adapter, bring the laptop to an Authorized Service Center for repair.

HT201413 ipod powers off during restore

Cannot get my ipod touch to restore. It powers off during restoration. Is this normal?

Hi tckm,
A restart is normal, as in step 4 here:
iTunes: Restoring iOS software
http://support.apple.com/kb/ht1414
However, if the device is powering off and staying off, this article is probably the way to go:
iOS: Unable to update or restore
http://support.apple.com/kb/ht1808
I hope this helps!
- Ari

MSI GTX 770 LIGHTNING - Unexpectedly Powers Off During 3DMark Demo (Ice Storm)

I run the 3DMark demo (I believe Ice Storm is the benchmark) on my PC containing this MSI GTX 770 LIGHTNING and at about 15 seconds or so, my PC suddenly powers off. I know that at least somebody else has experienced this issue before, but is this a common/semi-common problem? Is it something to be worried about? If I were to run other things (games, benchmarks, etc.) fine but still have problems with this demo, would that be indicative of an issue with the demo, or an issue with over-stressed hardware that still needs to be RMAed?
All other benchmarks runs fine, like even UNIGINE HEAVEN or games are now stable. PSU IS:
Be Quiet Dark Power Pro 1000W
I7 3770 3.5
I even found somebody with similiar problem , look:
http://www.tomshardware.com/answers/id-1799789/evga-gtx-780-unexpectedly-powers-3dmark-demo-ice-storm.html
Even youtube:
Other person comment:
"SalandFindles":
I simply can't get past the 1:38 mark without my computer fully turning off by itself during this Ice Storm video benchmark. I quickly checked the temps right after I turned my computer on after this crash and they didn't seem anything out of the ordinary. So, what do you think my problem is?
AMD FX-6300
Gigabyte Radeon HD 7970
12 GB DDR3 1600 RAM
120 GB SSD
1 TB HDD
Biostar Motherboard
Corsiar 750W Power Supply.
Its only ICE STORM DEMO again now:(

Quote from: sew333 on 07-November-13, 23:43:50
I know 750w is sufficient for a 770 but does it have enough amps on the 12v rail?
http://www.morele.net/zasilacz-ocz-zt-series-750w-fully-modular-80-plus-bronze-atx12v-v2-2-active-pfc-ocz-zt750w-eu-433644/
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341052
Take it?
Quote from: sew333 on 07-November-13, 23:43:50
I know 750w is sufficient for a 770 but does it have enough amps on the 12v rail?
It has the max amps that's possible for this wattage.
It has more than enough
Quote
http://www.morele.net/zasilacz-ocz-zt-series-750w-fully-modular-80-plus-bronze-atx12v-v2-2-active-pfc-ocz-zt750w-eu-433644/
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341052
Take it?
no, those are craps, i've told you what to pick.

IMac (Intel) 20" running osx 10.5 shuts down (powers off) during restart process

My iMac suddenly shut off during the power up process immediately after the apple appeared on the gray screen. I tried resetting the SMC and PRAM with no success. I tried booting from the install disk and still no Joy. Any other ideas?

Ouch, best bet is a badly muxed Hard Drive, but see if this works...
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive

iPhone Preventing iPhone from powering off during an app...

Hello all,
Back with you for yet another question...
Anybody knows how to prevent the iPhone from powering off if no input while an app is running ?
I'm thinking of building an app that would launch an alarm when motion is detected, but the app would need to be run without the iPhone powering off...
Thanks for any ideas, I haven't found anything yet, but I know it's possible as many "official" apps support this...
Thanks.
Serge

Ok, we're talking about the same thing. It's called "system sleep" in the docs, and the user setting under Settings->General is called "Auto-Lock" in English. This is how to turn Auto-Lock off for your application:
[UIApplication sharedApplication].idleTimerDisabled = YES;
Here is the precaution from the UIApplication reference:
Important: You should set this property only if necessary and should be sure to reset it to NO when
the need no longer exists. Most applications should let the system turn off the screen when the idle
timer elapses. This includes audio applications. With appropriate use of Audio Session Services,
playback and recording proceed uninterrupted when the screen turns off. The only applications that
should disable the idle timer are mapping applications, games, or similar programs with sporadic
user interaction.

Re: Satellite L350D-131 Keeps powering off during use

I have had my Satellite L350D-131 for 28 days and it has been great but over the last 48hrs I have been trying to add music to my laptop for when I go to uni next week.
But it keeps powering off mid use, there is no consistency to why it is turning off.
Can anyone help?

Hello
This is brand new notebook and something like this should not happen in normal circumstances.
The question is how you use your notebook. if the notebook is placed on the bed and cooling fan is blocked I can imagine it happens because of overheating.
Is the notebook placed on the desk when this happen?
Are you sure the cooling fan at the bottom side is not blocked somehow?

Macbook Pro continually powers off during start up process.

My daughter's 13" MacBook Pro (late 2011 - MD313B/A) is not completing it's startup process and continually powers off approximately a 1/5th of the way along the startup "process bar". Unfortunately, I can't obtain any further info regarding the Operating System etc but am assured that all Apple software is up-to-date. Both basic and enhanced hardware diagnostic checks show no apparent problems. Apparently, my daughter was downloading an original music CD to her collection last night when the system froze. She forced a power shut off and are now unable to power the machine up. Unfortunately we are about 6 weeks outside the extended AppleCare Protection Plan period! Any help and guidance would be greatly appreciated.Thanks.

First try SMC and NVRAM resets:
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
If there is no change, boot into the recovery partition.
From the 4 option menu select Disk Utility.
Run Disk Utility>First Aid, Verify and Repair.
If the disk cannot be repaired, it will have to be replaced.
Ciao.

IPhone 6 powers off during charging

I charge my 6 while I sleep. Three days ago, my alarm didn't wake me in the morning. Come to find out, my phone was powered off and the only way to wake it was to hold both power buttons like a hard reboot. That first day, the battery was not fully charged when I finally figured out how to wake it. The next night, I woke in the middle of the night and checked it- it was off again. I restarted it and the battery was at 100%. I left it plugged in and in the morning it was off again. The third night, I switched chargers and when I woke in the middle of the night it was off. I restarted it and unplugged it from the wall charger. In the morning it was still on. So this is happening only with the charger plugged in. Is there a setting that I'm missing or is this a defect??

actually i am updating from itunes. but the 2 logos stays ... and like i've said, it restarting, back to logo, restarting again, back to logo again, and still... the update indicator in itunes shows that i will have to wait another 63 minutes now to complete the downloading. it is moving, slowly

Imac g5 powers off during startup

The G5 gives the startup chime, apple logo comes up, there is a spinning wheel for about 15 seconds, and then it powers off. I've replace HD, RAM, reset the SMU, NVRAM, etc. Has anyone run into this?

Wihen you had the machine open, did you check the capacitors? It sounds as if either your power supply or your logic board have failed, my bet is on the logic board.

IMac powers off during DVD playback, why?

Right now, since the last update and my Applestore repair, by iMac powers off everytime I watch a DVD. Doesn't matter which player, I've tried Front Row, DVD Player, VLC, and Realplayer. It will play for 30seconds - 5minutes, and then power off. No error message.
My drive completely failed a few weeks ago, so I brought it to the Apple Store. They held it hostage for over a week and replaced the drive, the drive cable, and the "smart board" or whatever they called it. Upon return the drive works as expected... except this issue.
I run my business from my Mac so I want to make sure there isn't a simple way to fix this before I go back into the Apple Store (1 hour away).
Any ideas??
-Garrett

Hi, cannot tell you why..call AppleHelp (USA 1-800-275-2273)....L

System powers off during boot and I have to repair

Hello,
I am having a niggling problem with a Lenovo 3000 n200 with both Vista and Windows 7
1. close lid, system goes into standby
2. After a couple of hours system powers off ( power cable is in)
3. Power on, system starts booting and powers off, turn power on again and problem repeats indefinitely
4 To overcome problem I select repair and recovery, this sometimes powers off once or twice too, but eventually system boots, repairs and works fine.
I have rebuilt system several times and tried 3 different hard disks.
Problem occurs with both 3.03 & 3.05 firmwares
thanks for your help,
Taggn8tor
Solved!
Go to Solution.

Does this still happen when the battery is removed and is on PSU only, if it does then I have bad news for all you guys, the laptop will require a new motherboard and unless you have an extended warranty then this could be an expensive repair.
Apparently Lenovo call this fault a "Boot on cold issue" and seems to be a common problem with the N series which are over a year old. I personally think it's a single part failure on the motherboard or manufacturing fault.
To find the part number for the motherboard remove the RAM and under there will be the part number for the motherboard which will look something like 1r7694, 43n7652, 41r7695, 43n7654 etc.
The problem you have here is will a replacement motherboard after a year have the same fault?
I would also look up the Consumer Protection act and check out the part which says Fit for Purpose.

IMac powers off in sleep mode after Mountain Lion installation

After I installed Mountain Lion on my 2010 iMac, it will power off after I don't use it a while. It used to just go to sleep, I'd shake the mouse, and it would come back up. Now it powers off and I have to power it back up every time.
My Macbook has NOT had this problem since Mountain Lion install. It is fine.

Try doing a smc and pram reset.

Satellite A300 Won't boot after powering off during BIOS upgrade

Hi,
I was trying to upgrade the BIOS after reading an alert from TOSHIBA TEMPRO, after some time, it didn't seem to launch so I ran it a second time, then both BIOS application showed up in the taskbar only and it froze while I didn't start upgrading or anything, I had to power off.
I tried to reboot but now, it just stays on black screen ( the monitor isn't even powered, as if the system wasn't running ), all leds are powered with the "accessing hard disk" flashing, the led from the DVD reader keeps on flashing while making a noise every 3 seconds or so.
I've read on the forum that there may be no solutions but to take it to an authorized service provider, but I'm willing to take any possible solution before doing it.
Thanks for any advice.
Alex.

Yes I did. Thank you. In my case I had to borrow the USB diskete but I was lucky to get to it!.
The problems with the BIOS update are that there is no enough information about how to do the process. I found some important information after corrupting the BIOS while it should be available with the download archive. Also in my case the program started updating BIOS without prompting or anything and couldn't react to prepare everything on time. I could see this happens a lot. There may be a problem with that software because I heard people saying that everything seemed to work fine but then it didin't start up.
The worst thing was that local support service wanted me to change the whole motherboard and then paying a lot for removing one of the passwords saying always that there was no other option even when it seemed they knew that wasn't true! I'm a upset with them.

HP Pavilion dv9700z powers off during or immediately after POST

Similar Messages

Maybe you are looking for