Computer Freezing Randomly on Windows 11 How to Fix It

Computer Freezing Randomly on Windows 11 How to Fix It

The screen stops, the mouse won't move (or moves but nothing reacts), and the only way out is holding the power button. Random freezes are frustrating because they seem to come from nowhere, but Windows usually leaves clues. This guide starts with finding those clues, then works from the quickest fixes to the hardware checks.

Back up first: if your PC freezes often, copy your important files to an external drive or cloud storage before you go further. Frequent freezes can be an early sign of a failing drive.

When It Freezes: Try These Before the Power Button

1. Press Win + Ctrl + Shift + B. This restarts the graphics driver. You'll hear a beep and the screen flashes. If the PC comes back, a display driver problem is likely.
2. Press Ctrl + Alt + Delete and open Task Manager. If it opens, sort by CPU, Memory and Disk to see what's stuck, select it and choose End task.
3. Wait a minute or two. If the drive light is flickering, Windows may still be working.

If nothing responds, hold the power button for about 10 seconds.

Step 1: Find the Pattern With Reliability Monitor

1. Open Start, type reliability, and open View reliability history.
2. Look at the days your PC froze. Red crosses mark critical events such as "Windows was not properly shut down" and app or hardware errors.
3. Select an event to see its details. Look for a program or driver name that repeats.

Also note when it freezes: while gaming (graphics or heat), when the PC is idle (power settings or drivers), when a specific app is open, or right after startup.

Step 2: Install Windows and Driver Updates

1. Open Settings > Windows Update and select Check for updates. Install everything and restart.
2. In Settings > Windows Update > Advanced options > Optional updates, look under Driver updates for display, chipset or storage drivers from your PC maker.
3. Check your PC or laptop maker's support site for the latest graphics, chipset and BIOS updates for your model.

If the freezes started right after a driver update, roll it back: open Device Manager, right-click the device (for example under Display adapters), choose Properties > Driver > Roll Back Driver.

Step 3: Look for a Program Hogging Resources

With the PC working normally, open Task Manager (Ctrl + Shift + Esc) and watch the Processes tab for a few minutes.

• Memory near 100%: close browser tabs and apps, and check Startup apps in Task Manager to stop programs that start with Windows.
• Disk stuck at 100%: an update, indexing or antivirus scan may be running. If it never settles, check the drive (Step 5).
• One app always at the top: update it or uninstall and reinstall it.

Step 4: Repair Windows System Files

Corrupted system files can make Windows hang. Run DISM and SFC from an administrator Terminal. Full steps: how to run SFC and DISM to repair Windows 11.

DISM.exe /Online /Cleanup-image /Restorehealth
sfc /scannow

Restart when both are finished.

Step 5: Check the Drive's Health

A drive that is starting to fail can freeze Windows while it retries reads.

1. Open Settings > System > Storage > Advanced storage settings > Disks & volumes, select the drive and choose Properties. NVMe SSDs show Drive health there.
2. Run a disk check from an administrator Terminal: chkdsk C: /scan.

More ways to check: how to check hard drive and SSD health in Windows 11. If the drive reports problems, back up now and plan to replace it.

Step 6: Test the RAM

Faulty memory causes freezes, crashes and blue screens that look random. Windows includes a free test: open Start, type Windows Memory Diagnostic, and choose Restart now and check for problems. See how to test RAM with Windows Memory Diagnostic for reading the results.

Step 7: Check for Overheating

If the PC freezes under load (games, video, many tabs) and the fans are loud, heat may be the cause. Make sure the vents aren't blocked, don't use a laptop on a bed or sofa, and clean dust from the vents. See laptop overheating and fan running loud.

Step 8: Test in Safe Mode

Safe Mode starts Windows with only basic drivers. If the PC runs for a long time in Safe Mode without freezing, a driver or startup program is the cause, not the hardware. See how to start Windows 11 in Safe Mode.

Step 9: Scan for Malware

Open Windows Security > Virus & threat protection > Scan options, choose Microsoft Defender Offline scan and select Scan now. The PC restarts to scan before Windows loads.

Still Freezing?

• If the PC also restarts on its own, see Windows 11 keeps restarting on its own.
• Use System Restore to go back to a point before the freezes started.
• As a last resort, use Settings > System > Recovery > Reset this PC and choose Keep my files. Apps are removed, so back up first.

If the freezes continue after a reset, the cause is almost certainly hardware (drive, RAM, power supply or overheating), and the PC needs a hardware check.

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Frequently Asked Questions (FAQ)

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