Laptop Fan Speed Problem

Question

LAPTOP: Dell Inspiron 17r SE I recently got my laptop repaired because I was getting black screen at boot up. So they changed the motherboard and the problem is now fixed. But I think there is a problem with the fans of the laptop. My fan speed always goes like this during low performance use: 0rpm, then the laptop heats up, then it goes to 2600 (ish) rpm, when the laptop is cooled down it goes back to 0 rpm. This cycle just continues. Why aren't the fans running at a steady low (quiet) speed? I rather have this than constantly super quiet and then suddenly loud (2600 rpm is loud for low performance usage in my opinion). This problem didn't occur before the motherboard change.  Is there a problem or is this normal? Any help would be greatly appreciated. Additional information: by low performance usage I mean like max of 10% cpu usage.

kirkd · Answer

Try updating to the latest BIOS. There are also utilities which control the fan speeds to any profile you want.

Ace Portgas · Answer

I updated the bios to A16 and it did not resolve the issue.

The weird thing here is that the fan runs consistent when I'm gaming. (high cpu usage)

Of course the problem is that it's not consistent when i'm browsing, doing studies,... (i.e. low cpu usage)

I measured the speed with an application. The issue is that the fan stops completely and than runs fast. (0%->50%->0%->50%->..) I want to know why the fan isn't running at a constant low quiet speed when the latop is on low cpu usage. (Something like 25% of the max fanspeed)

Can aynone help me resolve this issue. Is my only solution using a fan control application that works with my laptop?

kirkd · Answer

The BIOS controls the fan speeds. Once more, find a fan control program that will allow you to program any fan profile you want. Try SpeedFan first.

Locked Topics – Laptops General

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