Vostro 15 3530, BIOS 1.27.0, fan control is broken

@P3rseus​ totally the same. I pick it up and and put a hand on the bottom vent, to see how hot it is, and fan turns on. I also use a stand with active cooler, that keeps it little colder. Also noticed that with time, SSD gets a bit hotter, sometimes even lagging the content on the screen. 

Seems like we're stuck until the next BIOS upgrade, if it solves the problem at all.

@pweu823​ I'm having the exact same problem with Inspiron 15 3530, and the worst part is I've already spoken to support and they ran several ridiculous tests and validated the machine as OK. Clearly the processor is overheating with the fan off after sleep mode.  Dell refuses to send a BIOS downgrade.

@user_3db5e1​ they don't allow downgrade from 1.27. 

@ShaiHullud​ Not for the end consumer, Dell has the capacity to provide a signed BIOS for downgrading in cases like this. But they refuse through all means of contact, and they don't take responsibility for the problem caused.

I would love to go back to the previous version but it blocks it even though downgrade is enabled in the BIOS. Support only had me test the hardware, they weren't interested for obvious reasons.

@P3rseus​ I spent hours with support, performing and collecting various useless tests. I have now filed and the proceedings will be conducted through this channel as Dell has no interest in resolving the problem by enabling this downgrade.

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@P3rseus​ install HWMonitor and make screenshots or screenrecords for them to see the temps you get. Few minutes ago I copied some files from one partition to another, it went straigth to 100C for both performance and efficiency cores and stayed there till the end of copying. Of course, fan 'refused' to intervene, acted like it's dead...

@user_3db5e1​ This is currently my main laptop. I made the mistake of thinking that updating the BIOS would always be the best option. Maybe I was wrong, and now do I really have to live with this fan issue for the next 3 to 5 months until they actually release a new BIOS? This is absolutely unacceptable.

@pweu823​ From what I just saw, Dell has removed the faulty BIOS update 1.27.0. Let's hope they release a fix as soon as possible.
Mine too, it's directly impacting my work because I have to take my laptop to different places and constantly opening and closing it is part of my daily routine.

Now Dell has withdrawn the update but they could really allow a downgrade to the previous one

As stated in the title, after updating to the latest BIOS (version 1.27.0) for certificate updates, the fan on my Vostro 3530 no longer adjusts its speed based on system load or the selected power profile.

The problem manifests in two frustrating ways:

1. If I start the laptop cold, the fan runs at a very low speed—or sometimes not at all—regardless of what I'm doing. This leads to rapid overheating and causes the processor to throttle down due to high temperatures, severely impacting performance.

2. Conversely, if I restart the laptop while it's already hot, the fan gets stuck at maximum speed. It continues to run at full blast even after the system has cooled down significantly, creating unnecessary noise.

The most frustrating part is that Dell's BIOS seems to prevent downgrading to the previous, stable version.

<Merging this to first original thread to get an accurate count of users. DELL-Admin>

After updating to BIOS version 1.27.0, the fan behavior became completely unpredictable. Sometimes the fan does not start until temperatures reach extremely high levels, and other times it gets stuck at maximum speed even after the system cools down. This issue did not exist before the update and appears to be caused by faulty fan control logic in the BIOS.

<Merging this to first original thread to get an accurate count of users. DELL-Admin>

Since installing BIOS 1.27.0, the system frequently reaches unsafe temperatures because the fan reacts too late or not at all. In some cases, the fan only starts near 95–100°C, and occasionally it does not spin even at critical temperatures. This creates a serious overheating risk that was not present before the update.

<Merging this to first original thread to get an accurate count of users. DELL-Admin>

私はvostro 15 3530使ってるんだけどwindowsupdateでBIOSバージョン1.27.0が強制アップデートされたんだよね。

それでファンが制御不能になったんだ。サポートに連絡してもダウングレードしろってだけ。ダウングレードできたらサポートになんて連絡しないよ。どのぐらいでこの問題解決するかな？

I'm using a Vostro 15 3530, and Windows Update forced an update to BIOS version 1.27.0. As a result, the fan is now uncontrollable. Even after contacting support, all they told me was to downgrade the BIOS. If I could downgrade it, I wouldn't have contacted support in the first place. How long will it take for this problem to be resolved?