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How to Fix High CPU Temperature Issues After Windows 11 Anniversary Update: Step-by-Step Guide

After updating to the Windows 11 Anniversary Update, many users notice their CPU temperature rising significantly. This can cause performance issues, automatic shutdowns, or even hardware damage if not addressed promptly.

High CPU temperature usually means your processor is working harder than it should or that your cooling system isn’t functioning properly. Fixing this involves checking both software and hardware factors.

This guide will walk you through simple and effective steps to lower your CPU temperature and keep your system running smoothly after the update.

Follow each step carefully, starting from the easiest fixes to more technical solutions.

Quick Note: Prerequisites and Initial Checks

  • Ensure your PC is on a hard, flat surface: Laptops and desktops need proper airflow to cool down efficiently.
  • Check for dust build-up: Dust inside your computer can block fans and vents, increasing temperature.
  • Confirm your system is fully updated: Sometimes, patches after major updates fix overheating issues.
  • Have basic computer knowledge: Some steps involve opening system settings or your computer case.

Step 1: Close Unnecessary Background Apps

Windows 11 Anniversary Update might have changed how some apps run in the background, causing higher CPU usage and temperature.

To fix this:

  1. Press Ctrl + Shift + Esc to open Task Manager.
  2. Click on the Processes tab.
  3. Look for apps using high CPU (check the “CPU” column).
  4. Right-click on unnecessary apps and select End Task.

This step reduces CPU load, which in turn lowers the temperature.

Step 2: Adjust Power Settings for Better Cooling

Windows power plans can affect how hard your CPU works. Switching to a balanced or power saver plan reduces CPU stress.

Here’s how to adjust power settings:

  1. Open Settings by pressing Windows + I.
  2. Go to System > Power & Battery.
  3. Click on Power Mode and select Balanced or Power Saver.

By lowering the CPU’s maximum performance, your processor generates less heat.

Step 3: Update or Roll Back Drivers

Sometimes, after an update, device drivers become incompatible, causing the CPU to overwork.

To update or roll back your drivers:

  1. Press Windows + X and select Device Manager.
  2. Expand the Processors section.
  3. Right-click on your CPU entries and choose Update driver.
  4. If updating doesn’t help, try Roll back driver if the option is available.

Keeping drivers compatible ensures the CPU doesn’t work harder than necessary.

Step 4: Check and Adjust Your CPU Cooling Settings in BIOS

The BIOS controls hardware-level settings, including CPU fan speed and temperature thresholds.

To access BIOS:

  1. Restart your computer.
  2. Press the BIOS key during startup (usually F2, Delete, or Esc depending on your PC).
  3. Navigate to the Hardware Monitor or Fan Settings section.
  4. Check if the CPU fan is set to run at appropriate speeds.
  5. Increase fan speed or enable automatic fan control if available.
  6. Save changes and exit BIOS.

This helps improve cooling directly from your hardware.

Step 5: Clean Your Computer’s Fans and Vents

Dust accumulation is a common cause of overheating. Cleaning your fans and vents improves airflow drastically.

How to clean:

  1. Turn off your computer and unplug it.
  2. If using a desktop, open the case carefully.
  3. Use compressed air to blow dust off fans and vents.
  4. For laptops, use compressed air in vents without opening the case if possible.
  5. Reassemble and turn on your computer.

Regular cleaning prevents dust build-up and overheating.

Step 6: Use Software Tools to Monitor and Manage CPU Temperature

Installing monitoring tools can help you keep an eye on CPU temperature and usage in real time.

Popular tools include:

  • HWMonitor
  • Core Temp
  • SpeedFan

These tools also allow you to adjust fan speeds or set alerts if temperatures get too high. Use these to proactively manage your CPU temperature.

Advanced Option: Disable Intel Turbo Boost or AMD Precision Boost

Turbo Boost temporarily increases CPU speed but also increases heat. Disabling it can reduce temperature at the cost of some performance.

To disable Turbo Boost:

  1. Open Control Panel and go to Power Options.
  2. Click Change plan settings next to your current plan.
  3. Select Change advanced power settings.
  4. Expand Processor power management.
  5. Set Maximum processor state to 99% to disable Turbo Boost.
  6. Click OK to save.

This is useful if you want lower temperatures and don’t mind slightly reduced CPU speed.

FAQs

Why is my CPU hotter after the Windows 11 Anniversary Update?

The update can change how system processes run, increasing CPU load or causing driver conflicts, which raises temperature.

Is a CPU temperature of 90°C normal?

No, temperatures above 85°C under normal use are generally too high and can damage your CPU over time.

Can software updates fix high CPU temperature?

Yes, sometimes Microsoft or hardware manufacturers release patches to optimize CPU usage after major updates.

Will disabling Turbo Boost harm my PC?

No, it only reduces performance temporarily to keep temperatures down. It’s safe to try if overheating is a problem.

How often should I clean my computer to prevent overheating?

Every 3-6 months is recommended, or more often if you are in a dusty environment.

When Nothing Works

If you have tried all the above steps and your CPU temperature remains high, consider the following:

  • Check for hardware issues: Faulty fans or thermal paste may need professional replacement.
  • Contact your PC manufacturer: They may have specific updates or repairs for your model.
  • Visit Microsoft Support: Look for any known issues or patches related to the Windows 11 Anniversary Update.
  • Consider a clean Windows install: Sometimes a fresh install fixes lingering software issues causing overheating.

Conclusion

High CPU temperatures after the Windows 11 Anniversary Update can be frustrating but are usually fixable with a few simple steps. Start by closing background apps and adjusting power settings to reduce CPU load. Update drivers and check BIOS fan settings to ensure your hardware is optimized.

Don’t forget to clean your PC regularly and use monitoring tools to stay ahead of overheating problems. If needed, disable Turbo Boost for extra temperature control. Finally, if all else fails, seek professional help or official support.

By following this guide, you can protect your CPU, improve performance, and enjoy a cooler, safer computing experience.

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