ASUS · ZenBook 14 OLED UX3405 · Windows 11
Fan Always Running Loud on ASUS ZenBook 14 OLED UX3405 Fix
The ASUS ZenBook 14 OLED UX3405 (Core Ultra 7 155H) is an efficient ultrabook, but its fans can run at high speed constantly when the power plan, fan mode, or background tasks are not configured correctly. This is especially common after a fresh Windows installation or a Windows Update that resets power settings.
Step 1 — Change the fan profile in MyASUS
Open the MyASUS application (search for it in Start). Go to Customization → Fan Profile and switch from Turbo to Standard. For quiet work sessions choose Silent, which reduces fan speed at the cost of slightly higher CPU temperatures under load.
Step 2 — Set Windows power plan to Balanced
Open Control Panel → Power Options and select Balanced. The Best Performance plan forces the Core Ultra 7 155H to stay at high clock speeds even during light tasks, which drives up heat and fan speed unnecessarily.
Step 3 — Update the BIOS
Go to the ASUS Support page, enter ZenBook 14 OLED UX3405, and download the latest BIOS. Run the installer and restart when prompted. ASUS regularly releases BIOS updates that improve thermal management and reduce unnecessary fan activity at idle.
Step 4 — Check for high-CPU background processes
Right-click the taskbar and open Task Manager. Click the CPU column to sort by usage. Common culprits include antivirus scans, Windows Update in the background, browser tabs running JavaScript, and sync services. End any unnecessary high-CPU tasks to let the fans settle down.
Step 5 — Update the ASUS System Control Interface driver
From ASUS Support, also download and install the latest ASUS System Control Interface and ATK Package drivers. These control hotkeys and fan behavior. An outdated version can cause the fan to ignore the profile set in MyASUS.
Nurul, Georgetown: “Switching from Turbo to Standard in MyASUS and installing the latest BIOS brought the fan noise down dramatically. It now only spins up during actual workloads.”
Frequently Asked Questions
Why do the fans run at full speed even when the laptop is idle?
The most common cause is the fan profile being set to Turbo in MyASUS, or a Windows power plan set to Best Performance. Switching to Standard fan profile and Balanced power plan usually resolves constant high-speed fan operation.
Is it safe to use Silent mode on the ZenBook 14 OLED?
Yes, for light workloads such as writing, browsing, and video calls. Silent mode reduces fan speed and CPU power limits, keeping the laptop quiet at the cost of reduced peak performance. Switch back to Standard or Turbo for demanding tasks.
Does updating the BIOS help with fan noise?
Yes. ASUS frequently releases BIOS updates that refine thermal algorithms and reduce unnecessary fan spin-up at low loads. It is one of the first things to try if the fan runs loudly even on the Standard profile.
How do I check if the laptop is actually overheating versus just being loud?
Download HWiNFO64 and monitor the CPU and GPU temperatures. If they stay below 85 degrees Celsius under load, the laptop is not overheating — it is just running a more aggressive fan curve than necessary. Adjust the profile in MyASUS accordingly.
Ryan holds a Computer Science degree and has over 20 years of hands-on experience with PC hardware, software, and driver troubleshooting. He is the author behind softwaredriverdownload.com, where he helps everyday users fix driver issues quickly and accurately. Ryan has personally tested most of the fixes on this site across a range of Windows 10 and Windows 11 machines.
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