Does Faulty RAM Cause Freezes or Crashes on PC?

Published by Nyau Wai Hoe - Updated on

RAM (Random Access Memory) is a fundamental component in a computer system, be it a desktop, laptop, or a gaming rig. It’s essentially the short-term memory of your computer, a place where data is stored and accessed for immediate use. Smooth and efficient performance largely depends on having not just sufficient RAM but also reliable and fault-free RAM. When RAM goes awry, it can lead to a variety of issues, with system freezes and crashes being some of the most common.

But how can you determine if your system’s erratic behavior is due to faulty RAM? This article will talk about the intricate relationship between RAM and system performance, providing insights and solutions to address and rectify the issue. Now, let’s explore how RAM malfunctions can lead to these unwanted disruptions.

Does RAM Cause Freezes and Crashes on PC

Understanding the role of RAM in system performance

Every time you launch an application, open a document, or even move your mouse cursor, your computer’s processor fetches data from RAM. This is because accessing data from RAM is exponentially faster than fetching it from a hard drive or SSD. A system with sufficient RAM can store more data for immediate access, reducing the need to fetch data from slower storage devices and thus speeding up operations.

Also see: Why is My Memory Usage So High When Nothing is Running?

How does faulty RAM cause computer freezes and crashes?

When RAM becomes faulty, it might not store data correctly. If the processor retrieves corrupt data due to a RAM malfunction, it can lead to unexpected system behavior, such as:

  1. Random freezes: These can be particularly frustrating, especially when you’re in the middle of important work or enjoying an intense gaming session. If a piece of required data is not correctly read from RAM, the system can hang.
  2. Blue screen of death (BSOD) or crashes: Often, Windows will display a dreaded blue screen with an error message indicating a memory management problem if there are RAM issues.
  3. Corrupted files: If the system tries to write data to a faulty RAM module and then save it back to the disk, the file can end up being corrupted.
  4. Application errors: Applications may crash or display error messages if they try to access data in a malfunctioning RAM location.

Can RAM cause PC to crash and blue screen

How do you recognize signs of faulty or bad RAM?

While the above symptoms can indicate a problem with RAM, they can also be caused by other hardware or software issues. However, there are a few telltale signs that specifically point towards RAM issues:

  • Frequent application crashes with memory-related error messages.
  • System fails to complete the boot-up process.
  • Random reboots without any error messages.
  • Graphics glitches or distorted display, especially in systems with integrated graphics that share system RAM.

To accurately pinpoint RAM as the culprit, diagnostic tests and tools can be employed, which we’ll discuss in the next section.

Linked issue: Why is my CPU Overheating and How to Fix it

What happens when there’s not enough RAM?

When the RAM is full, the system resorts to using a section of the hard drive or SSD known as the “page file” or “swap space”. In operating systems like Windows 10 and Windows 11, this feature is automatically managed by the system. Accessing data from a hard drive or even an SSD is significantly slower than from RAM. Thus, when a game requires assets that have been moved to the page file, it can lead to noticeable lag, stutters, or in extreme cases, freezes or crashes of apps, games or the entire computer.

Useful tip: How to Clear RAM Cache in Windows 11

Ram cause freezing and crashing Windows 11 PC

Why is RAM crucial for gaming?

RAM plays an important role in gaming, serving as a bridge between the storage and the processor, ensuring that games not only load quickly but also run without issues.

  1. Speedy access to game assets: When you’re playing a game, several assets like textures, 3D models, and scripts need to be readily available. These assets are temporarily loaded into RAM so that the CPU and GPU can access them quickly, enabling the game to run smoothly.
  2. Game responsiveness: A game’s responsiveness or how quickly it reacts to a player’s actions can significantly affect the gaming experience. Having enough RAM ensures that the necessary data is available instantly, reducing lag and stutters.
  3. Multitasking: Modern gamers often run multiple applications simultaneously. You might be streaming your gameplay, have a web browser open, or be chatting with friends on Discord. Sufficient RAM allows you to multitask without hampering the performance of the primary application – the game.

Handy guide: How to Allocate More RAM to a Game in Windows 11 or 10

RAM freeze gaming

Diagnosing and addressing faulty RAM issues

If you’re experiencing system freezes or crashes and suspect that RAM might be the issue, it’s essential to diagnose the problem accurately. Thankfully, there are several tools and methods available that can help you pinpoint and address RAM-related complications.

Windows Memory Diagnostic

The built-in Windows Memory Diagnostic tool is available for both Windows 11 and Windows 10 users, making it a readily accessible option to many.

  1. Click “Start” or press the Windows key.
  2. Type “Windows Memory Diagnostic” and select the application from the search results.Windows memory diagnostic Windows 11
  3. You’ll be presented with two options: “Restart now and check for problems” or “Check for problems the next time I start my computer.” Choose the appropriate option for you.Run Windows Memory Diagnostic
  4. Upon restart, the tool will automatically check your RAM for errors and provide results once the check is complete.Diagnose RAM memory in Windows 11

Related problem: 16GB RAM Installed Only 8GB Usable in Windows 11


MemTest86 is a third-party tool that’s widely recognized for its ability to detect RAM errors, even those that might slip past other diagnostic tools.

  1. Visit the official MemTest86 website to download the free version.
  2. Create a bootable USB drive using the instructions provided on the site.
  3. Restart your computer and boot from the USB drive.
  4. Allow the test to run. Depending on your RAM size, this might take some time.
  5. Review the results to identify any errors.

Run MemTest86 to check laptop RAM

    Incompatible RAM modules

    Using RAM modules that aren’t compatible with your motherboard or each other can lead to instability:

    • Mismatched speeds: Different RAM speeds can cause the system to default to the slowest module’s speed or lead to instability.
    • Different latencies: Varied timings can create compatibility issues.
    • Varied brands/models: Even if specifications match, sometimes mixing brands or models can cause problems.

    Learn more: How to Check RAM Brand, Model and Specs in Windows 11

    Always consult your motherboard’s manual or manufacturer’s website for RAM compatibility lists and recommendations.

    Different RAM modules cause PC freezes

    RAM overclocking

    Overclocking RAM means pushing it beyond its manufacturer-specified speed to achieve better performance. While this can yield faster data access and improved system performance, it comes with risks:

    • Stability issues: Overclocked RAM can lead to system crashes, freezes, or even data corruption if pushed too far.
    • Shortened lifespan: Continually operating at higher-than-specified speeds can reduce the lifespan of your RAM modules.
    • Voided warranty: Many manufacturers will void the warranty if the RAM has been overclocked.

    RAM Overclock

    If you’ve overclocked your RAM and are experiencing issues:

    1. Reset RAM to default settings: Access your system’s BIOS or UEFI settings during startup (usually by pressing the “Del” or “F2” key). Look for memory or overclocking settings and reset them to their default values.
    2. Monitor temperatures: Ensure your system has adequate cooling, especially when overclocking, as increased speeds can generate additional heat.
    3. Increase voltage (exercise caution and generally not recommended): Sometimes, slightly increasing the RAM’s voltage can stabilize an overclock, but this can also increase heat and reduce module lifespan. Always consult your RAM’s documentation or online forums for safe voltage ranges.

    Related resource: How to Reduce Hardware Reserved Memory in Windows 11/10

    RAM overheating

    Excessive heat can impair RAM performance and even damage the modules:

    • Symptoms: System instability, random restarts, and decreased RAM performance.
    • Causes: Poor case ventilation, high ambient room temperature, or adjacent components generating excessive heat.
    • Solutions: Improve airflow by cleaning vents/fans, consider adding RAM heat spreaders, or invest in a case with better ventilation.

    Physical inspection

    Sometimes, RAM issues can be due to physical problems like dust accumulation or improper seating of the RAM modules.

    1. Turn off your computer and disconnect it from the power source.
    2. Open the computer case or the back panel of your laptop.
    3. Inspect the RAM slots for any visible signs of damage or dust.
    4. If necessary, remove the RAM modules and clean the contacts using a soft cloth or eraser.
    5. Reinsert the RAM modules, ensuring they are seated securely and locked into place.

    Inspect computer RAM physically

    Replacing faulty RAM

    If diagnostic tests confirm that you have a faulty RAM module, the best course of action is to replace it. Remember:

    • Always purchase RAM that’s compatible with your motherboard.
    • For laptops, ensure the RAM matches the specifications in the user manual or the manufacturer’s website.

    Concluding thoughts

    Faulty RAM can indeed be the silent culprit behind many PC freezes, crashes, and other erratic behaviors. This holds true regardless of which OS you are using, be it Windows 10, Windows 11, an older version of Windows, or even another OS. Ensuring that you have adequate, functioning, and compatible RAM is imperative for a smooth computing and gaming experience.

    While RAM can often be a culprit behind system freezes and stutters, it’s essential to remember that PCs are complex machines. Many factors can impact their performance. Thus, always approach troubleshooting methodically, considering all potential components and conflicts that might be affecting your PC’s performance.

    Nyau Wai Hoe
    Nyau Wai Hoe is the Founder and Chief Editor of With a degree in software engineering and over 12 years of experience in the tech support industry, Nyau has established himself as an expert in the field, with a primary focus on the Microsoft Windows operating system. As a tech enthusiast, he loves exploring new technologies and leveraging them to solve real-life problems.

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