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my laptop always shuts down

post #1 of 12
Thread Starter 
hey guys,
well my laptop is old...about 4 years... But something is wrong with it... It always turn off when it gets too hot. And it gets hot in about 5 min... What do you think it's the problem?
Oh and the battery don't charge anymore, so I have to plug it to the wall.


Thanks!
Satellite L745D
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Satellite L745D
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post #2 of 12
Gets "hot".

How hot, and what is getting hot?

Has it always done this?
Bye Bye 775
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Bye Bye 775
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post #3 of 12
A common issue with notebooks is that the fans and fins on the CPU heatsink get clogged with dust bunnies. My recommendation would be to get it serviced and have the fan and heatsink cleaned/checked and thermal paste replaced. What brand and model is your laptop by the way?
Ж Prometheus Ж
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Ж Prometheus Ж
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post #4 of 12
Thread Starter 
I don't know what is getting hot, I think it's the heatsink!

My laptop is a zv5000.
Satellite L745D
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Satellite L745D
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post #5 of 12
Replace the stock thermal paste with AS5 and clean out the dust, it should run great.
Thudd
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Thudd
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post #6 of 12
How long have you had it? It really sounds like it needs to be serviced to me, HP's are a bit finicky to disassemble so I don't want to even begin to offer instructions on how to take it apart. If you are very lucky three or four screws would get the keyboard off and then you may be able to get at the fan and heatsink.

Here is the maintenance and service guide for you in case you are interested in seeing how to take it apart:
http://h10025.www1.hp.com/ewfrf/wc/m...lang=en&cc=us&
Edited by Clox - 12/25/08 at 9:26am
Ж Prometheus Ж
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Ж Prometheus Ж
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post #7 of 12
Battery is just worn out that is normal. I agree with the dust idea as the cause. And I would try yourself unless or until you feel uncomfortable. Taking pictures as you disassemble is helpful to some when putting back together. Reapplying thermal paste is a good idea but while many can do not incredibly hard does get closer to Clox advice of having a professional do. And if that is the case? If you find substantial dust just cleaning might be enough.

While not common and not supposed to happen is the battery getting hot and if you remove when plugged in any affect? When you turn on can you watch CPU usage does it ever drop to almost zero? The last two would not be the primary cause but might contribute.

And I will also assume you are not physically blocking vents?

Good luck and cleaning in and of itself should show substantial improvement by itself.
    
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post #8 of 12
If I am thinking of the correct model the zv5000 is actually really easy to work on and has direct access to the Heat Sink/CPU. I think there are roughly 10 screws you have to take out of a panel on the under side then 4 more screws for the heat sink - Take heed that this laptop is notorious for pulling out the processor with the heat sink attached to it still. This will not hurt the board or processor but you may need to put a bit more pressure to get it out. Clean out the fans as best as you can and clean off all the thermal paste and reapply as much as you took off, it should have a good amount on there. Its strange how much thermal paste the Heat Sink and CPU take on this laptop but it is the recommended amount.

Good luck!
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My Junk
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post #9 of 12
Cool knows more about this model than I. But He has made me think and maybe have concern. But remember I don't know this model at all. The description of lots of thermal compound has me concerned, "is there a thermal pad in there"? If there is if removal prevents proper seating (gap) no amount of thermal paste will resolve.

2nd (I am not a technician so take as is, I could be wrong). My understanding with AS5 or any that using the correct amount is critical. Too much is bad. I understand TC's to fill in microscopic divots and cracks allowing greater contact. More surface area in contact allows greater heat transfer. Gobbing on impedes this transfer.

Good luck I don't know what is correct on that model. As said in my first post if dust, remove it should help. If it is gobbed on when you look make sure still connected. If it cracked and contact is not solid could explain your issues. If solid and heavy consider leaving alone after cleaning and see how system works.
    
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post #10 of 12
This thread doesn't matter, go to the sale sub-forum and you'll see this laptop in parts.
Thudd
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Thudd
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