PC Turns Off Randomly But Not From Overheating (10 Quick Fixes)

PC Turns Off Randomly But Not From Overheating

Last updated on January 10th, 2024 at 2:40 am


PC turns off randomly not overheating? Well, if you’re experiencing this bizarre frustration of your PC shutting down unexpectedly, yet it doesn’t seem to be due to overheating, you’re not alone. There are various reasons behind this issue, and luckily, several quick fixes might just save the day. From software glitches to power supply concerns, understanding the possible causes can lead you to simple solutions.

Let’s explore the troubleshooting techniques that can help you resolve the mystery of your PC’s random shutdowns without the temperature factor.

Computer Randomly Turns Off? What Triggers This Issue?

Here are some common triggers for a Windows PC randomly shutting down without overheating:

  • Power Supply Problems: Inadequate power supply, a failing power unit, or issues with the power socket can cause abrupt shutdowns.
  • Software Glitches: Faulty drivers, problematic updates, or corrupted operating system files can lead to sudden shutdowns.
  • Hardware Malfunctions: Faulty hardware components such as a failing motherboard, RAM, or graphics card might prompt the system to shut down unexpectedly.
  • Overclocking: Aggressive overclocking settings can strain the system, causing it to shut down abruptly to prevent damage.
  • Viruses or Malware: Infections can disrupt system operations, causing sudden shutdowns as a defensive mechanism or due to their impact on system processes.
  • Faulty External Devices: Issues with connected peripherals like a malfunctioning mouse, keyboard, or external hard drive can trigger unexpected shutdowns.

Understanding these triggers can help in pinpointing the cause and applying appropriate fixes to resolve the issue.

PC Turns Off Randomly Not Overheating? Try These Fixes!

Let’s explore the easiest fixes and tweaks you can make to stabilize your PC and stop those annoying random power losses during use.

Method 1: Disable Fast Startup

Fast Startup, while designed to expedite the boot process, can sometimes cause issues leading to random shutdowns. Follow these steps to disable Fast Startup on Windows:

Step 1: Open the Control Panel by searching for it in the Start menu.

Disable Fast Startup

Step 2: In the Control Panel, navigate to “Power Options.”

power options

Step 3: Click on “Choose what the power buttons do” from the left sidebar.

choose what power options do

Step 4: If prompted, select “Change settings that are currently unavailable.”


Step 5: Scroll down to find the “Turn on fast startup (recommended)” option. Uncheck this box.

turn off fast startup

Step 6: Click “Save changes” to apply the new settings.

Step 7: Restart your PC to ensure the changes take effect.

Disabling Fast Startup might resolve the issue of random shutdowns that aren’t caused by overheating. If the problem persists, consider trying other methods to further troubleshoot the issue.

Method 2: Update Outdated Drivers

Updating outdated drivers can resolve compatibility issues causing random shutdowns. Here’s how to update them:

Step 1: Open the “Device Manager.” You can do this by right-clicking on the Start button and selecting “Device Manager.”

open device manager

Step 2: In the Device Manager window, expand the categories to locate the devices with outdated drivers (they often have a yellow exclamation mark icon).

Step 3: Right-click on the device with the outdated driver and select “Update driver.”

update driver

Step 4: Choose “Search automatically for updated driver software.” Windows will then search for and install the latest driver if available.

Step 5: Follow the on-screen instructions if prompted and restart your PC if necessary.

Step 6: Repeat this process for any other devices with outdated drivers.

Updating drivers can enhance system stability and potentially resolve the issue of random shutdowns not related to overheating. If the “PC turns off randomly not overheating” problem persists, consider exploring additional troubleshooting methods.

Method 3: Scan Your PC for Viruses or Malware

Viruses or malware can cause unexpected system behavior, including random shutdowns. Removing these threats can stabilize your system and potentially resolve the shutdown issue that isn’t related to overheating. If the problem persists after the scan, consider exploring other troubleshooting methods or seeking further assistance.

Here’s a step-by-step guide for scanning your PC for viruses or malware:

Step 1: Open your preferred antivirus software. If you don’t have one installed, Windows Defender or Microsoft Security Essentials are built-in options.

Step 2: Initiate a full system scan. Look for an option that performs a comprehensive scan of all files and folders on your computer.

scan your computer

Step 3: Start the scan and allow the antivirus program to thoroughly examine your system for any potential threats.

Step 4: If any viruses or malware are detected, follow the prompts to quarantine or remove them from your system.

Step 5: Once the scan is complete, restart your PC.

Method 4: Check for Faulty Hardware Connections

Checking for faulty hardware connections can help identify issues causing random shutdowns. Follow these steps to fix the PC turns off randomly not overheating issue:

Step 1: Power off your computer completely and unplug it from the electrical outlet.

Step 2: Open the computer case or access the components if you have a laptop (if it’s within your technical comfort zone).

Step 3: Ensure all hardware components are properly connected. This includes checking cables, power connectors, RAM modules, graphics cards, and other peripherals.

Step 4: If you notice any loose connections or components, carefully reseat them. Make sure they fit snugly into their respective slots or ports.

check faulty hardware connection

Step 5: Inspect for any signs of physical damage on components, cables, or ports.

Step 6: Close the computer case securely or reassemble the components for a laptop.

Step 7: Plug the computer back into the power source and turn it on.

Checking for and fixing any loose connections or damaged hardware components can often resolve issues leading to random shutdowns unrelated to overheating. If the problem persists, consider seeking professional assistance or further troubleshooting.

Method 5: Diagnose Power Supply Issues

Diagnosing power supply issues can be crucial in resolving random shutdowns. Here are some tips to resolve the PC turns off randomly not overheating issue:

  • Ensure the power cord is securely plugged into both the power outlet and the computer.
  • Verify that the power switch on the power supply unit (PSU) is set to the ON position.
  • Plug another device into the same power outlet to confirm it’s functioning properly.
  • Unplug unnecessary devices or peripherals from the power supply to reduce the load.

Addressing power supply issues might resolve unexpected shutdowns if they’re caused by inadequate power delivery or PSU malfunctions. If the problem persists, it’s advisable to further investigate or seek professional help.

Method 6: Run an SFC Scan

Running an SFC (System File Checker) scan can help identify and repair corrupted system files that might be causing random shutdowns. Here’s a guide:

Step 1: Open the Command Prompt with administrative privileges. Right-click on the Start button and select “Command Prompt (Admin)” or “Windows PowerShell (Admin).”

Step 2: In the Command Prompt window, type the following command:

sfc /scannow

run sfc scan

Step 3: Press Enter to initiate the scan. This process might take some time as it checks and repairs system files.

Step 4: Wait for the scan to complete. The System File Checker will attempt to repair any corrupted files it finds.

Step 5: Once the scan finishes, restart your computer.

Running an SFC scan can help resolve issues caused by corrupted system files, potentially addressing the problem of random shutdowns not related to overheating. If the issue persists after the scan, consider exploring other troubleshooting methods or seeking further assistance.

Method 7: Update Windows

Updating Windows to the latest version can often resolve various system issues, including random shutdowns. Here’s how to update your Windows system:

Step 1: Open the Settings menu. You can do this by clicking on the Start menu and selecting the gear icon or by pressing the Windows key + I.

Step 2: Click on “Windows Update” from the left-hand menu.

Step 3: Click the “Check for updates” button. Windows will then search for available updates.

update windows

Step 4: If updates are available, click on “Download” or “Install” to begin the update process.

Step 6: Follow the on-screen instructions to complete the installation. Your computer may need to restart multiple times during this process.

Step 7: After the updates are installed, restart your PC to ensure all changes take effect.

Keeping Windows up-to-date is essential for system stability and security. Updating to the latest version can often resolve underlying issues that cause random shutdowns not related to overheating. If the problem persists, consider exploring additional troubleshooting methods or seeking further assistance.

Method 8: Check Event Viewer for Error Logs

Here comes another simple tweak to fix the PC turns off randomly not overheating issue on Windows:

Step 1: Open Event Viewer. You can do this by pressing the Windows key + R, typing “eventvwr.msc” in the Run dialog, and pressing Enter.

Step 2: In the Event Viewer window, on the left-hand side, navigate to “Windows Logs” and expand it.

evevnt viewer Windows

Step 3: Click on “System.” This section records system events including errors, warnings, and critical events.

Step 4: Look for events labeled as “Critical” or “Error” around the time of the unexpected shutdowns. Note the details of these events, such as error codes or descriptions.

Step 5: Use the error codes or descriptions to search online for specific troubleshooting steps related to those errors. This can provide insight into what might be causing the random shutdowns.

Step 6: Address any identified issues or follow recommended troubleshooting steps based on the error logs.

Reviewing the Event Viewer logs can offer valuable information about the underlying causes of the random shutdowns, helping you take targeted steps to resolve the issue. If needed, seeking further assistance based on these logs can provide more specific guidance in troubleshooting.

Method 9: Reset BIOS/UEFI Settings

Step 1: Restart your computer and access the BIOS or UEFI settings. This is typically done by pressing a specific key during the startup process (common keys include Del, F2, F10, or Esc).

Step 2: Once in the BIOS/UEFI settings, look for an option to “Load Optimized Defaults” or “Reset to Default Settings.” This option might be located under different tabs depending on your motherboard’s BIOS interface.

Step 3: Select the option to reset the BIOS/UEFI settings to their default values.

reset bios

Step 4: Confirm the changes and exit the BIOS/UEFI settings. Save changes and restart your computer.

Resetting the BIOS/UEFI settings to default can resolve certain configuration issues that might be causing random shutdowns unrelated to overheating. After resetting, observe if the issue persists and if the system stability improves.

Method 10: Run a Memory Diagnostic Test

Step 1: Open the Start menu and type “Windows Memory Diagnostic.” Select the matching result to open the Windows Memory Diagnostic tool.

Step 2: Choose between “Restart now and check for problems (recommended)” or “Check for problems the next time I start my computer.” Select the option that suits your preference.

run memory diagnostics

Step 3: Your computer will restart, and the Memory Diagnostic tool will run a comprehensive test on your system’s memory.

Step 4: Allow the tool to complete the memory test. This process might take some time depending on your system’s memory size.

Step 5: Once the test is finished and your computer restarts, check if any memory-related issues are detected.

Running a memory diagnostic test helps identify potential problems with your system’s RAM, which could be a cause of random shutdowns not related to overheating. If the test reveals any memory issues, you might need to replace or repair the faulty RAM module to resolve the problem.

Still, Experiencing Random Shutdowns?

After trying all troubleshooting steps exhaustively, hardware incompatibility or component failures may be to blame if random crashes continue plaguing your PC.

At that stage, CPU and memory diagnostics can help pinpoint failing hardware causing conflicts. Stress testing software also helps determine what component introduces problems under heavy loads.

If you confirm a faulty part like a stick of RAM, the GPU, or an old hard drive/SSD, replacing that hardware should then resolve stability problems. Identifying and replacing aging/incompatible parts helps get your PC stable and reliable once again.

Don’t hesitate to reach out to a computer technician if you’ve diligently tried these fixes to no avail. An expert can assess compatibility issues, run advanced diagnostics, and recommend cost-effective upgrades or replacements tailored to your unique setup.


In troubleshooting the “PC turns off randomly not overheating” issue, exploring various methods can uncover the root cause. From software glitches to hardware malfunctions, these issues can disrupt your computing experience.

By disabling Fast Startup, updating drivers, scanning for malware, checking hardware connections, diagnosing power supply problems, running system file checks, updating Windows, examining error logs, resetting BIOS settings, and testing memory, you can systematically address potential culprits behind these unexpected shutdowns.


Why does my computer shut down randomly even though it’s not overheating?

Random shutdowns can stem from various factors like power supply issues, software glitches, hardware malfunctions, malware infections, or faulty connections. Investigating these areas can help pinpoint the cause.

I’ve updated drivers, but my PC still shuts down unexpectedly. What should I do next?

Consider other troubleshooting methods, like scanning for viruses, checking hardware connections, running system file checks, updating Windows, or testing the memory. Sometimes, a combination of fixes is needed to resolve the issue.

Is there a way to identify the cause of these sudden shutdowns?

Yes, examining error logs in the Event Viewer can provide clues about critical events occurring around the time of the shutdowns. These logs can guide further troubleshooting steps.

Can resetting the BIOS settings help with random shutdowns?

Resetting BIOS/UEFI settings to default can resolve configuration issues that might contribute to unexpected shutdowns. However, it’s advisable to note down any custom settings before resetting as they’ll revert to default.

Author Bio:

Dinesh Lakhwani

Dinesh Lakhwani, the entrepreneurial brain behind “TechCommuters,” achieved big things in the tech world. He started the company to make smart and user-friendly tech solutions. Thanks to his sharp thinking, focus on quality and the motto of never giving up, TechCommuters became a top player in the industry. His commitment to excellence has propelled the company to a leading position in the industry.

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