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PostPosted: Wed Aug 08, 2012 9:52 am 
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Joined: Tue Jun 19, 2007 3:26 pm
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Location: Broooklyn,NY
My machine has really started to act up the past two days. I had three blue screen crashes yesterday and one today. Todays said it was a BAD_POOL_CALLER. The temperature has been running up between 70C and 92C depending on what I have running and I have noticed that when the temp gets around 90C that's when it starts to freeze up. I bought a new battery a week ago, but the freezing and crashing only started yesterday so I don't know if they are related. I ran a hardware scan using the ThinkVantage tool box and every thing passed. The fan is running quietly and seems to be moving a good deal of air. I would like to ask what I can do to pin point the problem(s). Thanks in advance.


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PostPosted: Wed Aug 08, 2012 10:34 am 
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might be good to pull the fan/heatsink assembly and refresh the thermal compound with some arctic silver (or similar), and really blow out all the dust bunnies. pretty easy job without too much tear-down. if you don't already have it, here's the link to the hardware maintenance manual: http://download.lenovo.com/ibmdl/pub/pc ... 844_04.pdf

cheers!

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PostPosted: Wed Aug 08, 2012 12:08 pm 
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Location: Broooklyn,NY
I will give it a try thanks!


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PostPosted: Wed Aug 08, 2012 12:29 pm 
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While you are in there, check that the fan still works at all. They do wear out and just quit.

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PostPosted: Wed Aug 08, 2012 8:38 pm 
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Joined: Tue Jun 19, 2007 3:26 pm
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Location: Broooklyn,NY
Opened it up and cleaned out the colony of dust bunnies and reapplied some thermal compound. It ran for four hours then froze up again during a back up . I was unable to see what the temperature was because my screen saver was up at the time it froze. For the first two hours while I was working the tems were between 63C and 80C. the fan is working, but I don't know if it is moving as much air as it should.

Are there other reasons that it could be freezing so often and how can I trouble shoot?

8741-CTO
Product Id- 8741W1C


Last edited by khary23 on Wed Aug 08, 2012 8:47 pm, edited 1 time in total.

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PostPosted: Wed Aug 08, 2012 8:42 pm 
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Senior ThinkPadder
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Turn off the computer, remove the battery, power it back on and run it on AC. See if this problem persists. If it's gone, then the battery is the culprit.

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PostPosted: Wed Aug 08, 2012 8:48 pm 
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Location: Broooklyn,NY
pianowizard wrote:
Turn off the computer, remove the battery, power it back on and run it on AC. See if this problem persists. If it's gone, then the battery is the culprit.


I will test it but, would this happen with a brand new battery?


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PostPosted: Wed Aug 08, 2012 9:37 pm 
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Is it an OEM battery?

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PostPosted: Wed Aug 08, 2012 10:49 pm 
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Location: Broooklyn,NY
Yes it is


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PostPosted: Wed Aug 08, 2012 11:05 pm 
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Just run the machine with no battery for a few hours and see what happens...

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PostPosted: Thu Aug 09, 2012 5:03 am 
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Joined: Tue Jun 19, 2007 3:26 pm
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Location: Broooklyn,NY
Has been running since about 12:30 on A/C with no freezing temps even getting as high as 90C at times.


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PostPosted: Thu Aug 09, 2012 7:17 am 
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Location: Albrightsville, Pennsylvania
Install ThinkPad Fan Control and see what that does for you.

While no freezing is a good sign, 90C is a lot unless you were gaming or stress-testing the machine.

Good luck.

_________________
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your friendly retired FlexView farmer)

Collecting SSDI: A31p, T42p

Abused daily: T60, T61, R60F, R500F

For sale: T61p (4:3), T420, T601 QXGA


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PostPosted: Fri Aug 10, 2012 7:10 am 
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Joined: Tue Jun 19, 2007 3:26 pm
Posts: 46
Location: Broooklyn,NY
My Zone Alarm found the Heuristic Trojan.Win32.Generic and Packed.Win32.Krap.hc viruses which were removed. It has been running afterwards with out freezing. I also contacted the retailer that I purchased the battery from and he suggested that I update my BIOS. I did so and the machine has been running in the 45C to 78C range since.


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