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HP DV7 1070ed - shutting down problem

post #1 of 22
7/4/11 at 3:24am
Thread Starter 

In sempteber 2008 I've bought my dv7 1070ed, since then I was really happy with this laptop. Never had problems with it, beside the dead battery, but most of them die after 6 months(that's why they only give 6 months warranty on batteries). Around a months ago I've noticed that the cooling fan is turning on more frequently while using the laptop. Last week tough, it was a very hot weather and my laptop turned off by itself. I've tried to turn it back on few times, I was able to log in and after than it shuted down again. The next day I was able to turn it on for an hour and run CPU Tester Pro, but after an hour of running it went off as well. The next day I was able to start and run fully the windows recovery, but after that it went off. Yesterday it shuted down after few seconds. 

 

I can hear the fan is running, I can hear hdd starting up, but after few seconds it goes off. I was also able to update BIOS, but it didn't help either. 

 

Is it broken cpu? are those the symptoms of broken cpu? because if it was motherboard I think it wouldn't go on at all? 

 

I've found a cpu I would need for $160, seems to be a reasonable price, while in Holland I can get it for 400 euros.I also thought about getting some second hand laptop and I saw few nice ones for 200-300 euros. I would rather repair mine tough. I liked it so much. 

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post #2 of 22
7/4/11 at 9:19am
I would try first taking the comp apart and giving it a good clean up, and applying new thermal paste.

cheers ...
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post #3 of 22
7/5/11 at 2:00pm
When you strip it down and get access to the fans either brush the dust of with a fine paint brush (artist type) or a can of compressed air...if using the air, take a toothpic and hold on to a fan blade while spraying to keep it from over-spinning...take a look around the heat sink...the dust/hair/dirt is normally caked like felt along its edge...
This may be useful
((http://www.scribd.com/doc/24976174/HP-Pavilion-Dv7-Service-Manual))
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post #4 of 22
7/5/11 at 2:16pm
Thread Starter 

Thank you guys! I'm going to do that. I hope it will help. Wish me luck :) I'll report soon how it went. 

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post #5 of 22
7/5/11 at 2:54pm
If I can suggest,when you are following the instructions...have some scotch tape on hand...print off the instructions with the list of stages/steps and when the instructions call for removal of screw(s) tape them to that stage because often times some are shorter longer than others, so when you reverse the steps, then you will have the right screws for the right area...it helps..look at the index of the manual and it has removal of heatsink/processor/fan..follow those steps and you should be good to go...another hand device is your digital camera..take lots of pics if you encounter wires or not sure of some placement
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post #6 of 22
7/6/11 at 4:29pm
Thread Starter 

Just finished putting it back together. There was just a little bit of dust behind the heat sink, in the fan, almost nothing. I've put fresh thermal paste, but it didn't work :( unfortunately. The first time I've pressed the power button it went off in a second, immediately, I've tried few more times, but windows even don't show up. Could it be the cpu then? or is it something else? 

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post #7 of 22
7/6/11 at 4:49pm
Acccording to your first post, you mentioned it shut down after periods like an hour, that why I suggested the cleaning...however, if it shuts down immediately, its definately not a cleaning situation but something possibly more serious...just curious, is your battery pretty much shot...from what I read about other HP models, apparently HPs dont work with just A/c and a dead battery...anyway to check with a known good battery...

((http://forums.pcworld.com/index.php?/topic/104146-laptop-shuts-down-almost-right-away/))
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post #8 of 22
7/6/11 at 6:35pm
Thread Starter 

After the first shut down, I was able to turn it back on once for an hour, otherwise it was few minutes, then few seconds. My battery "died" after around 9 months since I bought the laptop, warranty was only 6 months for the battery. Since then I'm plugging it in and I didn't bother to get a new battery. They are pretty expensive. 

 

Update:

 

What I've just did, after I've put my laptop back together I didn't put the battery in, now I've just tried again with the battery(after reading your last post saugen48) and guess what .. it started up, but I must had f...ed up something because my wirless doesn't show up :( 

 

Would it really be possible that the problem is the dead battery? I will get a new battery, but would you recommend oem battery (the ones you can get on ebay)? or should I get the orginal one? 

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post #9 of 22
7/7/11 at 3:06am
If you do get a battery, I would get the original replacment..I am sure others will echo that on here as well...too many cases of those "compatable" ones not working or not working on the machine...really, you get what you pay for...I am suprised that it worked without the battery, as many posts that discussed this said their laptops did not work when the battery was removed
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post #10 of 22
7/7/11 at 3:27am
Thread Starter 

I meant it worked with battery, I runned the cpu tester pro, I don't know how long it was on, but when I woke up it was off again. I'm sure it was running for about 30 minutes. Yesterday when I was able to turn it on, I saw the battery status was at 0% I think it wasn't at 0% before. It doesn't want to start up again and today it shuts down immediately(with the battery)

 

Running the cpu tester pro it showed me one error. I didn't write down the excat words, but it said some like HD failure cpu 0 cpu 1 unknown path to the file. Did I broke something? besides the wireless module. Before I run the cpu tester pro I was able to play a movie and browse through the files normally. 

 

I guess I'm going to order the battery.

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post #11 of 22
7/7/11 at 4:49am
If it said HD failure, then your Hard drive looks like its ready to die...Check this out : ((http://pcsupport.about.com/od/toolsofthetrade/f/testharddrive.htm)). See if your harddrive has errors...if so, that maybe why it doesnt start up sometimes....were you or are you getting any error messages
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post #12 of 22
7/7/11 at 6:25am
Thread Starter 

That's not good. The very first time after it started to shut down constantly(almost 2 weeks ago). I was running the cpu tester pro as well and then it didn't show any hd failures. But why was this failure mentioning cpu's? Could it has to do something with the fact I put the new thermal paste?

 

I didn't get and I'm not getting any error messages. I hope I  will be able to turn it on finally with a new battery, so I can test the hd. 

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post #13 of 22
7/13/11 at 6:07pm

Greetings

 

Probably you have a issue with overheated north bridge itself. We fix a load of these laptops, all of the dv-4 ; dv-5; dv-6; dv-7 with ATi Radeon Chips has the common problem. Mostly its caused by the temperature itself, too bad in these times the manufacturers use a cheap thermal pads whom they use to conduct the heating from chips ( dedicated graphics / north bridges ). After year, maximum two thermal pads loose their heat conduct properties and they change into the thermal heaters. Also another defect in these chips is that the chip itself doesn't have a thermal diode ( you cannot check how many degrees is on the chip ), usually it shut down after when it hit in to the 110-120C. Through the years, chips are getting damage and only one possible way is to the replace it for new one. It's possible to replace the chip without buying new motherboard which usually costs a lot.

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post #14 of 22
7/13/11 at 9:48pm
Thread Starter 

ATi Radeon, do you mean the graphic card, right? but I have NVIDIA GeForce 9600M GT in there. Perhaps I could put a new pad on the chip? or could I use the thermal paste I have on it as well? So far, waiting for the battery, should arrive tomorrow. 

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post #15 of 22
7/14/11 at 7:30am

So in this case you're safer than if you would have ATi graphics. There are several models of DV's with different configuration. Look for GPU-Z program and check whats your temperature, its shouldn't be higher than 60C in idle mode. If its higher you have to open laptop clean up all of the dust, replace the thermal pad for copper shim ( best solution ) or buy new thermal pad ( which will get damage after year ).

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post #16 of 22
7/14/11 at 8:14am
Thread Starter 

At this moment I can't do anything, we'll see if the new battery will help. I really hope so! but could you use thermal paste (I got cooler master) instead of thermal pad or copper shim?

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post #17 of 22
7/14/11 at 8:20am

Thermal paste is necessary, thermal pad / copper shim its something different. Its the stuff which touch physically IC core. Thermal paste is required to use either, without that the heating conduction is low.

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post #18 of 22
7/15/11 at 2:31pm
Thread Starter 

saugen48, I think you were completely right about the battery. Today, I've received a new one and ka boom it's working. 6 hours now, I'm assuming that was the problem and now it's fixed

 

I haved run the cpu tester again and now I got full report:

 

 

Hot CPU Tester Pro 4.4.1
Copyright © 1999-2003 7Byte Computers
Tuesday, January 09, 2001 - 21:01:06
Diagnostic Report
---------------------------------------------
Test Started at:  14:55:05
Test Duration:  06:00:03
Physical Processors Available:  2
Logical Processors Available:  2
Multi-Processors System(SMP):  Available
Hyper-Threading Technology:  Not Available
CPU Name String:  Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
Speed:  1994MHz
Logical Processors Tested:  CPU 0, CPU 1
Average CPU(s) Performance:  100.0%
 
 Modules Results: 
Complex Matrix:   Finished without error
Calculating Pi:   Finished without error
Sorting Algorithms:   Finished without error
Prime Test:   Finished without error
Fast Fourier Transforms:   Finished without error
Chipset:   Finished without error
L1 Cache:   Finished without error
L2 Cache:   Finished without error
Memory:   Finished without error
HD:   File Exception error:All or part of the path is invalid:CPU 0: an unnamed file contains an invalid path.
MMX:   Finished without error
SSE:   Finished without error
SSE2/SSE3:   Finished without error
 
The date is not correct, because the fact I've opened the laptop it rested everything, right? Anyway, as you can see guys, there is something wrong with HD, what could it mean and it there any way to fix it without buying a new drive?
 
rjcomputerinc, I've put thermal paste on the graphic chip as well, I took off the thermal pad that was on it(it was kind of broken). Is it okay like that? or should I get a thermal pad and change it? 
 
I'm going to run the bios HD test and I'll write whether I'm getting an error there as well. 
 
Looking forward to hearing from you guys
 
Update:
 
Just run the cpu tester once again, running it as administrator and there is no error anymore with HD. 
 
Update: 
 
Just using speedfan(watching movie on a extern monitor and browsing internet)
 
GPU: goes from 57 to 63 now
CPU 0: from 50 to 54
CPU 1: from 50 to 53

Edited by welawai - 7/15/11 at 5:34pm
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post #19 of 22
7/16/11 at 3:33am
You can always go to the manufacturer of the HD and use their tester to look for bad sectors etc and will give you an idea if the HD is acting up and ready to crash...Temps dont look too bad now either..glad to see you have it up and running
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post #20 of 22
7/16/11 at 10:22am
Thread Starter 

I already thought everything is fine, but it seems there is something wrong with the power socket. At this moment it stopped charging and the led light next to the power socket is blinking. I had the same in the morning, but I've took out the battery the power cord and pressed the power button for 15sec few times and it worked, then during the day, the same happened(led light blinking)I took out the battery, plugged the cord only and the led light was steady. Tried to change it to the old battery, but either way it was on and off plus when the power cord was plugged in and the battery was out I could hear this "ticking' sound. 

 

Is there anything do to about it?

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