Windows Using Too Much RAM? Here's How to Fix It

Does your Windows PC feel slow, freeze during simple tasks, and show RAM usage spiking close to 100% in Task Manager? While heavy RAM usage by processes can be one cause, the issue may also result from improperly installed memory, overheating, malware, or other factors. Here's how to find the root cause and fix it.

Check What's Using the RAM Resources

To fix high RAM usage the right way, you first need to identify what's actually consuming the memory. The issue could stem from a single app with a memory leak, too many background processes using excessive RAM, a misbehaving Windows service, or even malware disguising itself as a normal process. You can investigate this through the Task Manager.

Right-click the Start button and open "Task Manager." Then, go to the "Processes" tab from the left sidebar and click on the "Memory" column to sort all apps and services by usage in descending order. Look for the processes at the top of the list consuming the most memory. Once identified, the steps you need to take will depend on the type of process involved.

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Reduce RAM Strain and Disable Startup Apps

If multiple processes are consuming RAM without any single one standing out, the solution is to manage them more efficiently. For example, if your browser is using a lot of memory, limit the number of open tabs. If you're using a cloud storage app, consider pausing sync while you're actively working. Similarly, close any messaging apps or game launchers running unnecessarily.

Next, disable startup apps, as they can slow things down - open Task Manager, go to the "Startup Apps" tab or the "Services" section, and turn off any unnecessary apps.

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Put an End to Memory Leaks

Some apps can develop "memory leaks," where they don't properly free up RAM after use. RGB software, antivirus programs, screen recording tools, and gaming clients are among the most common culprits.

To rule out this possibility, you can boot into Safe Mode, which starts Windows with only essential drivers and services, helping you rule out interference from third-party apps.

To enter Safe Mode, go to Settings > System > Recovery, then click "Restart Now." Next, navigate to Troubleshoot > Advanced Options > Startup Settings > Restart, and when prompted, press 4 or F4. Once in Safe Mode, open Task Manager and check whether the high RAM usage persists. If it doesn't, a third-party app is likely consuming excessive memory.

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Windows Processes Consuming Too Much RAM?

But what if the process that uses the most resources isn't a third-party app but a core Windows component? In that case, the troubleshooting steps will vary depending on the specific process. For instance, if you identify Antimalware Service Executable, you may need to schedule scans at a different time. If it's Windows Explorer, restarting it or performing system checks can help.

If the issue involves the Desktop Window Manager, you might need to update your graphics drivers, tweak visual settings, or make other graphics settings. In short, once you confirm that a process belongs to Windows (right-click it and select "Open File Location"), look it up online to understand what it does and why it might be consuming resources.

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Once you've identified the cause, apply the appropriate fixes to fix the underlying issue, and the process's resource usage should return to normal on its own.

Adjust the Virtual Memory Size

Windows uses a portion of your storage (HDD or SSD) as virtual RAM when your physical memory runs low. If the page file is too small or turned off, your system may struggle under heavy memory usage. This can trigger app freezes, crashes, or "insufficient memory" warnings. In such cases, adjusting the page file size can help.

To change virtual memory, right-click the Start button and open "Settings." Then go to System > About > Advanced System Settings. In the System Properties window, switch to the "Advanced" tab and click "Settings" under Performance. In the next window, go to the "Advanced" tab again and click "Change" under "Virtual Memory."

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Here, uncheck "Automatically manage paging file size for all drives," select "Custom Size," enter your desired Initial and Maximum values (in MB), and click "Set."

Rule Out Malware Infections

Not every piece of malware is aimed at invading your privacy; some secretly use your system resources for their own tasks. It can disguise itself as a normal process, continuously consuming RAM and slowing down your system. If Task Manager shows high memory usage even when no apps are open, the process consuming the most RAM might be malicious.

To rule out this possibility, right-click the suspicious process in Task Manager and select "Open File Location." If it leads to an unknown or unrecognized app, uninstall it to free up your resources. Afterward, run a full malware scan using Microsoft Defender or a third-party antivirus to ensure no traces remain that could continue to impact your system's memory.

Uninstall Bad Windows Update

Did you start noticing high memory usage after installing a Windows update? If so, that update might be the cause of the issue. To verify, check the KB number of the recently installed update by going to Settings > Windows Update > Update History, and note it down. Then, search online or check Microsoft forums to see if other users are experiencing the same problem.

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If you find multiple reports confirming the issue, you should uninstall the update. To do this, go to Settings > Windows Update > Update History, then click "Uninstall Updates." Locate the most recent update, click "Uninstall," and confirm your choice. After that, wait for Microsoft to release a fix or a newer update, and install it once available.

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Check for Faulty or Improperly Installed RAM Sticks

If a RAM module isn't seated correctly, your system may detect less memory than is actually installed, which can spike RAM usage. To check, open Task Manager, go to the "Performance" tab, and click on "Memory." If the number of active slots is fewer than the total number of installed RAM modules, it may indicate that one or more modules are not properly seated.

To fix this, turn off your computer and unplug it from the power source. Open the case and carefully remove and reseat each RAM module until you hear a click. Test them one by one to see if the system fails to detect any module. While doing this, inspect the sticks and slots for damage or dust and clean them if necessary.

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Run a Memory Diagnostic Scan

If none of the previous solutions work, your final step should be to run the Windows Memory Diagnostic scan. This utility checks your RAM for hardware issues that may not be apparent during regular use. To start the scan, press Win + R, type mdsched.exe, and hit Enter. Then, select "Restart now and check for problems."

Your PC will reboot, and the tool will automatically scan your memory. Once the scan is complete and you log back in, Windows will display the results. If no issues are found, your RAM is functioning correctly; if problems are detected, further action will be required. Keep in mind that the scan may take anywhere from a few minutes to an hour to finish.

If you don't see the results immediately after restarting, you can check them in the Event Viewer app.

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If it's not a hardware problem, the solutions above should help bring down your RAM usage. That said, if you often encounter high memory usage, your system may not have enough RAM, and upgrading could be a long-term solution. If RAM usage increases when your laptop gets hot, focus on reducing overheating to help your RAM perform efficiently.