What should I check first when I see symptoms of system file corruption?

First, proceed with the ‘Completely restart your PC’ step. Temporary driver and service errors can often be recovered just by restarting. We recommend that you avoid changing multiple settings at once and check to see if your symptoms change after each step.

How do I check for the candidate cause ‘abnormal termination’?

If there is no change in the first step, compare in order through ‘App recovery/reset or using official reinstallation’. If symptoms disappear immediately after certain actions or the conditions for their occurrence change, this can be an important clue in narrowing down the cause.

Corrupted Windows System Files: When Do You Need a Professional Check?

Even if you follow the above steps in order, if symptoms of system file damage recur or hardware abnormalities such as a burning smell, abnormal noise, overheating, or failure to recognize parts appear together, we recommend backing up important data and performing a professional inspection.

PC FIX

Computer Troubleshooting Guide

Windows

Problems with corrupted Windows system files

If you are seeing “system file corruption” symptoms, possible causes include abnormal termination, disk errors, etc. Check system file recovery, storage device status, and recent system changes together.

Solving Order
We've organized the methods starting with the simplest and least expensive ones. Please check the solutions one by one, starting from the top.

Do you have these symptoms?

System file corruption
SFC error
Windows malfunction
DISM required

main causes

Abnormal termination
disk error
Update failed

How to solve

Please check them in order from the top. If the issue is resolved, you do not need to proceed to the next step.

Completely restart your PC

Temporary driver and service errors can often be recovered just by restarting.

Difficulty Easy time 2-5 minutes cost 0 won

1Save the file you are working on.
2From the Start menu, select Power → Restart.
3After rebooting, see if the same symptom occurs again.

confirmation point

If it's normal right after rebooting, it's most likely a temporary software error. After these steps, see if the “System File Corruption” symptoms decrease or disappear. If there is no change, the possibility of abnormal termination is also checked in the next step.

Use app recovery/reset or official reinstall

You can reconfigure corrupted app files and settings.

Difficulty Easy time 10~30 minutes cost 0 won

1Find the problem app in Settings → Apps → Installed apps.
2If there is a recovery option, run it first.
3If that doesn't work, back up any necessary data and then reset or reinstall with the official installation file.

Check for Windows updates

Updates may fix known errors in the operating system and underlying drivers.

Difficulty Easy time 10~30 minutes cost 0 won

1Open Settings → Windows Update.
2Click Check for updates to install any pending updates.
3After installation is complete, restart your PC.

Check Windows system files

Corrupted system files can create boot, explorer, app, and update problems.

Difficulty Moderate time 15-40 minutes cost 0 won

1Open a terminal or command prompt with administrator privileges.
2Run DISM /Online /Cleanup-Image /RestoreHealth.
3After completion, run sfc /scannow.
4When the scan is finished, restart your PC.

Check for disk errors and recent changes

Corrupted system files or recurring app errors may be due to storage or recent system changes.

Difficulty Moderate time 20~60 minutes cost 0 won

1Check drive error checking and SMART status.
2Check the system utilities and drivers installed immediately before the problem.
3If necessary, review installing System Restore or Recovery.

Frequently Asked Questions

We've put together a list of things we frequently check regarding this issue.

Related issues

If the symptoms do not match exactly, please check the issue below.

Windows

Reset This PC Fails

If the current symptom is closer to “PC initialization failure,” first check the recovery environment, system file corruption, or disk error. Check system file recovery, storage device status, and recent system changes together.

View solutions →

Windows

System Restore Fails Issue

If the current symptom is close to “system restore failure,” first check whether security programs, file locks, or restore points are damaged. Check system file recovery, storage device status, and recent system changes together.

View solutions →

Windows

User profile is corrupted and settings disappear after logging in

If “temporary profile” is recurring, it is better to narrow it down to user profile registry or file corruption or disk errors rather than changing multiple settings all at once. Please check separately the login method such as PIN/password, network, and user profile.

View solutions →

Windows

CRITICAL_PROCESS_DIED Blue Screen Issue

Among Windows issues, the “critical process died” symptom may be related to system file corruption or storage errors. Record the stop code and when it occurred, then narrow down the cause by recent changes, RAM/storage, and system files.

View solutions →

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If you enter the symptoms you are currently seeing in the PC FIX search box, we will find the related problem.

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