Agitation by the System built-in cooling fan

Please would you tell me what is wrong with my cooling fan, which suppose to kick on ONLY if system becomes hot or reaches certain temperature. However, my system cooling fan turns itself on whenever I watch online news video broadcast/clips on you tube, apple's movie trailers or doing video conference, even if I just power it on. weird as it is, would only under those activities listed above trigger the Cooling Fan. I would like to know if there's any system adjustment to change setting of that, and what causes the fan to turn on? could it be malfunction? Why only under those activities will the fan turn itself on but not others?
I just reformat it recently, so everything should be neat and smooth. But Gee...when it's on, it's going nonstop and full force until the seconds I quit from those activities!
Thank you for your time, I really appreciate it.
Sincerely,
Brian
Message was edited by: brian gene

I think you are seeing normal behavior. My 1G PowerBook with Tiger will also speed up the fans when temps get to about 140F/60C and that's usually when watching videos. If you don't a "thermometer" program, get the iStat Pro widget here:
http://www.apple.com/downloads/dashboard/status/istatpro.html
It will report temps as well as fas speed so you know what's going on.
Why only under those activities will the fan turn itself on but not others?
I'm not a hardware expert but I know that the video codecs are part of a decoding procedure that involves the main processor and the graphics processor unit (GPU) in the video circuitry. Both make more heat when they work harder, just like the human body. 2D activities like word processing, mail programs and surfing don't take as many system resources.
I believe the fans run all the time, but the base speed is low enough to be nearly silent. I can't hear mine until they speed up when doing videos and the like. I can hear the speed gradually increase speed, and then gradually decrease back to their "silent" mode once I quit programs that use a lot of resources.
I also have a MacBook Pro and, like the PowerBook, its fans start to spin up when I watch videos.

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Hello there I will try and explain this whole story as best as I can. First off, I know my way around computers, I am going to school for them. Asking for help is a last stretch for me... but I need to learn when to ask for help inorder to learn from my mistakes. This laptop is a HP Pavillion DV7. List of replacement parts for this laptop can be found here.I have done as much research as I can on the issue. So let me explain my situation. As a gamer, I know I stress out my laptop a lot. at 2.2ghz, it doesnt do much, but its 8mb L3 cache allows me to play quite a lot, not to mention what I gather from sources, my processor itself determines it should turboboost itself to 3.1ghz when it is under a heavy load. ( If this information is not true, then I will have to look into those sources again ) I have to admit, I do leave my computer on. I administrate gameservers and Teamspeak servers quite often, and gain access to the computers using the internet from my house to help fix the problems. I know I am not suppose to, but I leave it on so that I have the convience of looking into issues first hand and help the community owners as quickly as possible. I feel this is why I am having the issue I am. On Monday morning, a regular morning to wake up, first thing I do is check computer for any messages. The top left hand side of the computer is hot. Normal, since this is where the processor is in the laptop. The bottom part however never truely is. It got slightly warm, enough for me to take a notice. I turned computer off to let it rest so no problems had occured. a nice 30-45 minute rest. Laptop became room tempature at touch so I proceeded to turn it on. Upon doing so, I got a message The system has detected that a cooling fan is not operating correctly.Continued operation is not recommended and may cause unpredictable behavior that could result in random shutdown, data loss or possible system damage. The system will shut down in 15 seconds. To prevent shutdown and continue operation, press the Enter key now.System Fan (90b) I restarted computer, got same message. Proceeded to turn off laptop, then made sure AC power cord and adapter were working fine and plugged in. ( My Adapter block is normally hot, I think this is due to me leaving laptop plugged in all the time and never turning it off.) I restart once more, then head into BIOS. I check that the System Configurations are correct, Fan is automatically turned on, and I check BIOS logs for start up. All came up clear except the past 3 times. They stated part 090-B came up an error. This surely was the fan not being recognizes, as the start up told me. I go searching in the internet for replacement fan. This is the fan I have pruchased [ Replacement Fan ] and the thermal paste I purchased with it [ Thermal Paste ]. I rechecked with friends who work in computer stores for a living and they told me this was the correct part. So I decided I would wait. Today, I was told of an issue with the server, I log in to check the problem, get the error message for the fan. No biggie. I fix the issue within 5 minutes. My laptop was not on long enough to get hot. I get a message for an update today. I figured, sure; not a huge process needer, It will be fine. I let it update, and restart because I know it will need to finish applying them on restart. This time... the fan error did not display. I let the update patch in all 36,000 files. I restart after. I check the BIOS logs, It said no errors. I restart another 2 times to make sure I am not missing the message. There is none. Whether or not my idea is wrong, I will still replace the cooling fan. My question is... Since the BIOS is responsible for how the computer starts, could the update possibly be the reason the error message no longer occurs? with 36,000 files patched, they could have easily been a driver fix and or a BIOS patch. They also could have been a simple security fix, but I have no way or knowing. I know it was 14 updates, and 36,000 files patched. Could this at all have effected the error I was getting? Again, whether or not it could be the solution, I wil lstill replace the fan. I ask for future reference of this knowledge. Could this be a simple mistake in the matter? Should I take into consideration of the update as a fix for the fan? Did it matter at all? EDIT It seems though the error is gone, my processor still seems to be getting hot. This image shhows no sign of the fan working http://i.imgur.com/N1UgmHb.png

Still waiting for someone with more experience then me to explain to me the situation...

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hard drive. Of course, that may make your iBook much
less portable.
How old is your iBook? Which model do you have? (What
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Mac" in the Apple menu.)
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i have already ordered a 60gb HD with Tiger on it.
i have external USB hard drives .... i can backup there.
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i was able to use D-link USB DWL-G122 adapter to connect to my wifi network
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if it is possible, what is the procedure of backup , erasing HD and then reinstallin
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Shop for hp 2000 notebook replacement f... on Google
Original Hp Pavilion ...
£7.75
onlinelaptopb...
UK Warehouse-UK Warehouse-
£3.29
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HP Pavilion G7-2000 laptop
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PcHub.com
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Checkurtech
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change the FAN always on setting in BIOS. under Device configuration there is option available to change FAN activity from always on.
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WW
“I am an HP Employee“
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Dear Customer,
Welcome and Thank You for posting your query on HP Support Forum
Please perform the below shown steps to resolve the issue:
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Although I am an HP employee, I am speaking for myself and not for HP.
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Greetings labview community,
I'm fairly new to the labview program and though I have watched the tutorial videos and tried to search these forums I couldn't find a solution to my problem.
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Temperature sensors and fan activation.vi ‏130 KB

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"The fans speed should be faster, the longer the temperature stays above 25 degrees, until it drops down to 25 degrees. "
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http://zone.ni.com/devzone/cda/tut/p/id/6440
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Hi
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thanks
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Agitation by the System built-in cooling fan

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