01

Check CPU and RAM usage

If your processor or memory is constantly maxed out, the system will freeze under load.

  • Open Task Manager (Ctrl + Shift + Esc)
  • Click the Processes tab
  • If CPU or RAM is near 100%, there is a bottleneck, look at what's consuming it
02

Check disk usage

A disk stuck at 100% is one of the most common causes of freezing on Windows, especially on older HDDs.

  • Open Task Manager
  • Click the Performance tab, then Disk
  • If disk usage is constantly at 100%, the drive may be struggling or a Windows service is overloading it
03

Run a disk check

Check the drive itself for errors or failing sectors.

  • Open Command Prompt as Administrator
  • Run the following:
chkdsk /f
  • You may need to schedule this on the next restart, allow it to run
04

Check for startup overload

Too many apps launching at startup can overwhelm the system and cause freezing during or after boot.

  • Open Task Manager
  • Click the Startup tab
  • Disable anything you don't need to start automatically
05

Test in Safe Mode

Safe Mode loads only essential drivers and services, which helps identify software-related causes.

  • Hold Shift and click Restart
  • Go to Troubleshoot → Advanced Options → Startup Settings
  • Select Safe Mode
  • If the freezing stops in Safe Mode, a driver or software is causing the issue
06

Check for overheating

Thermal throttling or emergency shutdowns can look and feel like a freeze.

  • Feel the system, especially the bottom of a laptop or the back of a desktop
  • Excessive heat during normal tasks suggests a cooling problem
  • See our Laptop Overheating guide for more detail
07

Check your storage type

The type of drive in your PC makes a significant difference to stability.

  • HDD (hard disk drive) mechanical, prone to freezing when aging or fragmented
  • SSD (solid state drive) much more stable and significantly faster
  • If you're running an older HDD and experiencing regular freezes, the drive may be failing
08

Check Event Viewer for errors

Windows logs every error. Event Viewer can point you to what's causing the freeze.

  • Press Start and type Event Viewer
  • Go to Windows Logs → System
  • Look for recurring red errors around the times your PC freezes
  • Note the error codes and search them online for more specific guidance

Common Underlying Causes

If freezing is consistent, especially during light use, it's usually one of these:

  • Drive failure the most common cause in older machines
  • RAM issues faulty memory causes unpredictable freezes and crashes
  • OS corruption damaged system files that need repair or a clean reinstall

If your computer is freezing regularly, especially during simple tasks, it's usually a sign of a failing drive, memory problems, or system corruption. If you've gone through these steps and the problem keeps coming back, it may need a more in-depth check. If you're based in Johannesburg or Gauteng and want a proper diagnosis without the guesswork, you're welcome to reach out.

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