Helping people with computers... one answer at a time.
The noise could be from several culprits, but the first suspect should always be the fan.
I just installed a brand new motherboard for my desktop computer and now, it's making a very loud noise. It only seems to get loud when I surf sites and watch videos. Sometimes, it gets loud while idling. It was not doing this before I installed a new motherboard. Did I hook something up wrong? I can't tell if it's coming from the CPU or the fan, but I think it's coming from the CPU.
In this excerpt from Answercast #21, I look at a noisy fan that may be coming from extra heat being generated by that new motherboard.
I would first remove the cover and start paying attention to where the noise is coming from when you hear it.
This is a desktop computer; so you should be able to leave it open while it's running. When it starts making this noise, you should be able to tell, pretty quickly, exactly where it's coming from.
My money's on the fan. Here's what I think is probably happening:
As a result, the fans are having to kick in more often in order to cool it down. Typically, fans make noise. Maybe they're rattling a little bit more than they used to. Maybe you just have loud fans; I don't know.
But that's most commonly the cause.
I know that my desktop for example has some fan speed settings that are incredibly noisy when they come on. I rarely ever hear them because the native cooling of the machine works well enough that there isn't a huge issue; but when the computer really gets hot, those fans can come on at an exceptionally high speed and make a fair amount of noise.
So, that's the first thing that I would suspect; that it's simply a case of your computer getting hotter than it used to. The fans are kicking in when they didn't used to in the past.
Now it's also possible that you might want to pay attention to the disk drive. Certainly, I don't know, again, how noisy the drives are.
Drives are usually pretty quiet these days; but it's very possible that the drives themselves are doing something. When you're surfing sites, watching videos, it's possible that you are low on memory.
That would cause a lot of disk activity and potentially a lot of disk noise. Unfortunately, it could also cause a fair amount of heat, which takes us back to the fan issue.
Finally, I'm not sure if there's anything when you say the CPU. A CPU is a silent device.
There's nothing on it that makes noise other than electrical noise. On the
other hand, you may have a separate fan attached to the CPU. That would be
another cooling fan to pay attention to and see if maybe that is causing noise...
because your computer is, once again, heating up more frequently than it used
to before you replaced the motherboard.
Next from Answercast 21- Do SSD drives have a limited life expectancy because they are flash memory?
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