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Lenovo thinkpad edge overheat shutdown issue

Last response: in Laptops & Notebooks
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April 22, 2012 5:52:17 AM

ok so my brother has a lenovo thinkpad edge with an i3 380m, and its started to shutdown from overheating..

i downloaded CpuThermometer (http://www.cputhermometer.com/) to see the cpu temperature and ran internet explorer.. after opening some heavy sites (like youtube,logic buy), although windows taskbar diddnt show well praticaly any cpu usage, the total cpu usage according to cpu thermometer was more than 75%, and then temperature went upto 80 C and started to rise slowly and within like 30 seconds the computer shutdown/restarted (hard shutdown)...

this is his work laptop so dosent really want to go thrugh the hassle of getting it repaired specially since he only uses it for stuff like Word, presentations, etc, nothing that would require even 40% of the cpu power..

any ways, i know internet explorer sucks, but that much cpu load is still too much for internet explorer so im guessing its a virus..

basically , i want to know if theres a way to easily underclock the cpu, or like make it so that it dosent go over, say 60% load. i tried reducing the priority of internet explorer to low but diddnt help...

also, the operating system is windows xp...

any ways any solutions?

thanks in advance.
a b à CPUs
a b D Laptop
April 22, 2012 6:07:57 AM

You can limit the max CPU ratio via the power option. Of course if you have reason to suspect its a virus and its a work laptop he should absolutely NOT use it and NOT have it online as if its infected it could be stealing information.

Open task manager and click show processes for all users. Go to view/columns add select CPU time. sort by CPU time to find the offending process. Quite frankly I wouldn't trust CPU thermometer to report load right anyway. And if the CPU is scaling to the load it may be showing the percent wrong
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a c 471 à CPUs
a c 433 D Laptop
April 22, 2012 8:10:54 AM

To do it via the Power Options, right click the battery icon (or electrical plug icon) in the lower left corner of the screen, then...

1. Select a power plan and then click "Change plan settings"
2. Click "Change Advanced Power Settings"
3. Look for "Processor power management" and expand it
4. Expand "Maximum processor state"

You can now enter the percentage usage of the CPU while on battery and plugged in.

Note that it does not work the way you think it would work. Meaning if you set the CPU to 90% it will run at 90% of the stock clockspeed. No... it's not like that. For example, my i5-2410m has a stock speed of 2.3GHz. Turbo boost overclocks it to as high as 2.9GHz when stressed.

100% = Turbo Boost on.
99% = Turbo Boost off. CPU runs at 2.3GHz
78% - 98% = 1.796GHz
69% - 77% = 1.596GHz
60% - 68% = 1.397GHz

So you get the picture.
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a c 471 à CPUs
a c 433 D Laptop
April 22, 2012 8:12:45 AM

You might have some dust that needs to be cleaned out from the grill.

Worse, the thermal paste might have completely dried up and is no longer effective. That means taking apart the laptop, cleaning off the old thermal paste and then applying new paste like Arctic Silver or IC Diamond for example.
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April 22, 2012 1:29:21 PM

the instructions u gave for maximum cpu usage are for windows 7..the laptop has xp :( ..

but in any case, there are power schemes however no way to specifiy cpu usage in them.however, with the power scheme "max batter" and laptop unplugged, the problem seems to not exist when unplugged..
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April 24, 2012 3:05:50 PM

Best answer selected by death_relic0.
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October 6, 2012 3:19:07 PM

I had the same problem - over the past few months I remember the fan spinning faster and faster, until a few days ago the system started throwing a thermal shut down unless I throttled it under Power Options. Tried running a CPU Stress Test, wouldn't get through the first 3 seconds.

So I proceeded as follows:
1. Blew it out. No better.
2. Compressed aerosol. No better.
3. Put new thermal paste between CPU and cooler. Just passed the stress test with the fan not even reaching max speed.

Solution: new thermal paste!
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