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Andy, Computer Consultant
Category: Computer
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Experience:  11yr exp, Comp Engg, Internet expert, Web developer, SEO
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My IBM T42 shuts off unexpectedly. It has been doing this for

Resolved Question:

My IBM T42 shuts off unexpectedly. It has been doing this for some time, but now the up time is only about 10 minutes. Cause? Correction?
Submitted: 7 years ago.
Category: Computer
Expert:  Andy replied 7 years ago.
Hello !!

Goto this link :

In DOWNLOAD section you will read this :

The latest version is SpeedFan 4.38. (click there on SpeedFan 4.38 link) and the software will get downloaded.

Double click to install it. Run it and give me results of Fan speeds and temperatures as shown below :

Let me know

Customer: replied 7 years ago.
I am getting the laptop now. I have been using my other system to contact you.
Expert:  Andy replied 7 years ago.
No worries. Reply to this when you have the info

Customer: replied 7 years ago.

It says Found FUJITSU MHT 2080AH on AdvSMART

Found ACPI temperature 47.0C

End of detection


HD0: 41C

Temp1: 47C

Expert:  Andy replied 7 years ago.
Hello !!

It didnt give any Fan speed reading ?

Can you give me the temp. reading of the time just before it shuts down.

Customer: replied 7 years ago.
No fan reading given it has the following message: SMB Bus Message unsuccessful also Address $30 appears to be WRITE ONLY
Expert:  Andy replied 7 years ago.
Hi !!

Does the laptop's base becomes very hot before it shuts down.

If not, did this problem begun after you made any hardware / software changes ?

Customer: replied 7 years ago.
Yes. it becomes quite hot, but problem started well before any changes to hardware or software.
Expert:  Andy replied 7 years ago.
Hello !!

In that case its because of dust clogged in the heat sink and the cpu fan. This is quite a common problem in which computer will shut off anytime to protect the processor from burning off.

You need to get your laptop serviced to clean the heat sink and complete motherboard. If possible replace the fan over the sink as it must have worned out with usage.

If you want to do it yourseld, here are the instructions :
1. Open up the laptop completely. Then remove the heat sink and the fan.
2. Clean the heat sink and fan and remove all dust from it.
3. Buy Arctic-Silver (search ebay) paste.
4. Now also cleanup the motherboard by gently blowing cold air on it. Do not rub it with anything. Just cool air blow.
5. Now you have to place the heat-sink back in its place. Before doing so you need to put just few drops of Arctic-Silver paste on heatsink which will enhance the contact between heatsink and microprocessor.
6. Then close the laptop's casing as it was before.

Now your heating problem should reduce considerably.

Feel free to ask any question or concern you may have. I will be glad to help you.



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