How to Fix a Windows PC That Keeps Hanging

What Causes This?

A Windows PC that keeps hanging is usually dealing with a resource bottleneck or a software problem. Common causes include too many startup apps, low free disk space, corrupted system files, outdated drivers, failing storage, or background processes using too much CPU or memory. In some cases, malware or a recent Windows update can also make the system freeze or stop responding for short periods.

Common Symptoms

• Programs stop responding and show “Not Responding”
• The mouse moves, but clicks do nothing for several seconds
• File Explorer freezes when opening folders or right-clicking files
• The PC hangs during startup or shortly after signing in
• The system becomes unresponsive when multiple apps are open

How to Fix It Manually

1. Check what is overloading the PC

   • Open Task Manager with Ctrl+Shift+Esc.
   • In the Processes tab, click CPU, Memory, and Disk to sort by usage.
   • Look for apps or background processes stuck at very high usage.
   • If one app is frozen, select it and click End task.

2. Disable unnecessary startup programs

   • In Task Manager, open the Startup apps tab.
   • Review the list and look at the Startup impact column.
   • Right-click apps you do not need at startup and choose Disable.
   • Restart the PC and see if hanging improves after login.

3. Free up disk space and remove temporary files

   • Press Windows + I to open Settings.
   • Go to System > Storage.
   • Check how much free space is left on your main drive.
   • Click Temporary files, select items you want to remove, then click Remove files.
   • If your system drive is nearly full, uninstall unused apps from Settings > Apps > Installed apps.

4. Run a system file repair

   • Click Start, type cmd, then choose Run as administrator for Command Prompt.
   • Run this command:

     sfc /scannow

   • Let the scan finish. If it finds and repairs files, restart the PC.
   • If hangs continue, run:

     DISM /Online /Cleanup-Image /RestoreHealth

   • Restart again after the DISM scan completes.

5. Update Windows and device drivers

   • Open Settings > Windows Update and click Check for updates.
   • Install pending updates and restart.
   • Then right-click Start and choose Device Manager.
   • Expand key categories like Display adapters and Disk drives, right-click the device, and choose Update driver.
   • If the problem started after a driver update, open Properties > Driver and try Roll Back Driver if available.

6. Check the drive for errors

   • Open This PC, right-click your C: drive, and select Properties.
   • Go to the Tools tab and click Check under Error checking.
   • Follow the prompts to scan the drive.
   • If Windows reports drive errors often, back up your files immediately, since a failing SSD or hard drive can cause frequent hangs.

7. Scan for malware

   • Open Windows Security from the Start menu.
   • Go to Virus & threat protection.
   • Click Scan options and run a Full scan.
   • Remove anything detected, then restart the PC.

Fix It Automatically with Kudu

Kudu can speed up this process by cleaning temporary files, reducing startup load, and helping remove the junk and background clutter that often causes Windows to hang. If your PC keeps freezing and you want a faster, simpler fix than checking each issue manually, Kudu is the easy option.

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