How to Fix a Lenovo Yoga 720 Fan That Won’t Stop Running After Sleep Mode

Waking your Lenovo Yoga 720 from sleep mode only to hear the fan spinning non-stop can be frustrating. This issue often stems from power settings, outdated drivers, or a glitch in the system’s sleep function. Below, we’ll walk you through proven steps to fix the fan running constantly and restore quiet operation.

Why Does My Lenovo Yoga 720 Fan Keep Running After Sleep?

Several factors could cause this, including:

• Power management settings not properly configured.
• Outdated or buggy BIOS/fan drivers.
• Background processes overloading the CPU after waking.
• Dust buildup affecting cooling efficiency.

Let’s tackle this step-by-step.

Step 1: Adjust Power Settings

Incorrect power settings can keep the fan active unnecessarily.

1. Press Win + R, type powercfg.cpl, and hit Enter.
2. Choose your active power plan, then click “Change plan settings”.
3. Select “Change advanced power settings”.
4. Expand “Processor power management” and set “System cooling policy” to “Passive”.
5. Click Apply and test sleep mode again.

Step 2: Update BIOS and Drivers

An outdated BIOS or fan driver might be the culprit behind the Lenovo Yoga 720 fan noise.

• Visit Lenovo’s official support page.
• Enter your model (Yoga 720) and download the latest BIOS and chipset drivers.
• Install them, restart your laptop, and check if the fan calms down.

Step 3: Check for Background Processes

High CPU usage can trigger constant fan activity.

1. Right-click the taskbar and select “Task Manager”.
2. Under the “Processes” tab, look for apps using excessive CPU.
3. End unnecessary tasks and monitor the fan.

Step 4: Clean the Fan and Vents

Dust can reduce cooling efficiency, forcing the fan to overwork.

• Power off your Lenovo Yoga 720 and unplug it.
• Use compressed air to blow out dust from the vents.
• Avoid opening the laptop unless you’re comfortable with hardware.

Still Noisy? Reset Your Laptop

If all else fails, a factory reset might resolve deeper software glitches causing the fan to run after sleep mode.

Go to Settings > Update & Security > Recovery > Reset this PC, and follow the prompts.

By following these steps, your Lenovo Yoga 720 fan should stop running non-stop after sleep mode. Enjoy a quieter, cooler laptop!