PC shuts down when it gets below 40 Celsius (i guess 104 F)

LurkerMihai

LurkerMihai

Geek Trainee
OK this is the weirdest thing you've heard:
After windows is loaded CPU temp if about 43-46 C.
If i don't do anything, his temp begins to drop, and in about 10-20 sec (depending of the ambient temperature) it gets to 40 C. When it gets below, you can just count in you re head... 3.. 2... 1.. BANG shutdown (i mean brute forced, like unplugging)
If i start any program that keeps my CPU active and therefore ABOVE 40 C, the PC works fine.
Wen i close that program.. well.. you can watch it die when he goes below 40!

Mobo: geforce 6100 sm-m ECS HT 2000. CPU amd Athlon le-1100 (1800-1900 mhz)
And i have another Cpu -amd athlon 64x2 5000+
This second cpu does the same when below 54 C. To start windows with it i need to stop fan while in bios and watch it go over 54.

Now i don t really expect to find a fix here. BUT I would love a logical explanation for this....
Ps it,s not the power supply, i have a spare too. so i'm not expecting a "IT'S THE MOBO, CHANGE IT" reply, i also guess its the mobo. I'm just curios what weird malfunction can make this strange behavior!
Ps: excuse my bad grammar.
 
That is awfully strange.
Besides the board being bad, it might be something is funny with the BIOS. One of two things I'd try would be
1.) Clearning CMOS.
-and, if the above doesn't help-
2.)Updating BIOS. Anymore, companies typically have a Windows-based flash utility to assist here. Just don't do this during a situation which you might loose power (e.g. severe weather) and you should be fine.

Also, if you've recently purchased this motherboard, check the return policy of the place of purchase, you might be able to get a replacement.

At a guess, I wager the temp sensor is buggy, but I'm not sure if it's the physical sensor or a software issue.
 
I did :) I updated bios several weeks ago. I took the latest bios from the manufacturer web page (it's from 2008).
I also tried different multiplier/v-core voltage/fsb/HT multiplier combinations.
It is however (a little) more stable on a under-clocked multiplier. 200 X 9 (1800) seems to work better.
V-core doesn't seem to affect it. it works the same from 1.200 v to 1.350 v, below that wont start.
Except that bigger voltage keeps it hot more easy (it needs less stress to stay above 40 C).
The mobo is old, i have no warranty or something like that:)
 
Yes, you can modify fsb, multiplier, and ht link from bios. But is not a great mb. I think best cheap flexible mbs (for OC) are from Gigabyte..
 
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