Laptops forum


HP Pavilion dv7 notebook - intel i7 - fan very loud

by CNLindsay / June 26, 2012 3:30 AM PDT


About a month ago I purchased a dv7 notebook with an Intel i7 processor. Right out of the box, the computer's fan noise was a little more than I'm accustomed to in notebook PCs, and at times of very high CPU usage (gaming, HD video) the noise level could be irritating, making the computer's above-average sound system seem more of a necessity than a luxury.

But recently the fan noise has changed from a loud whir to more of...well, a lawn mower-like rattle. The computer is not overheating and shows no error messages regarding the fan; I'm running Windows 7, the BIOS is current, and the vents are clean. When the fan kicks on max the noise is clearly audible across a big room and there is considerable physical vibration; even when the fan is barely running (which is almost always) there is an out-of-place buzzing or knocking rather than the usual even, quiet hum. However, to reiterate, the core does not seem to be overheating and the processor performance is unaffected, although the bizarre fan noise persists at some level (and cuts in and out) even when the computer is merely idling. It's phasing in and out as I type this, every few seconds.

I don't want to take the unit apart for nothing, since I believe quite a number of components need to be unmounted to reach the fan and CPU.

I've reduced the max CPU capacity to 70%, which is not an ideal solution but seems to help somewhat. Any other suggestions apart from having the fan replaced or just getting a different computer? This is a disappointing situation for less than 30 days off the shelf. I ran a lower-end Toshiba for three years with no fan problems whatsoever (though admittedly plenty of other ones).

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All Answers

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Sounds like a warranty issue.
by R. Proffitt Forum moderator / June 26, 2012 3:40 AM PDT

Or a reason to return it. Fans are REQUIRED in current designs and for reasons of keeping the cost low you find some models have a little more fan noise. And it does change over time due to what apps folk install and more.

The only thing besides the warranty and return is to prop up the back of the machine a little to let more air flow around the unit.

Also, reducing the fan speed is a bad idea. Laptops already have a short life span so this reduces that again.

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by CNLindsay / June 26, 2012 3:48 AM PDT

Yeah, that's sort of what I'm thinking. It has always been a little louder than any notebook model I've worked with in the past, and I even noticed the fan noise on the store's floor model--but now it's more of an unhealthy buzzing and rattling, not just a loud fan whir--that makes me suspect something screwy with the fan, even though it has been babied.

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We do have "canned air"
by R. Proffitt Forum moderator / June 26, 2012 3:53 AM PDT
In reply to: thanks

Thanks for the reminder as mine just ran out. I use it on the vents and that noise could be a fan failure (see warranty) or a tiny scrap of paper got to just the right spot. Then again I found a cat whisker to create a similar sound.

Comparing sounds on laptops is fun to do but doesn't mean much as an i7 powered laptop meant we accepted more power and heat that goes with that.

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