You will learn 4 helpful ways to repair system files in Windows 7, 8, 10, 11 and how to effectively prevent this error and data loss due to it.
A system file is an important computer file, as its name implies, without which or it's damaged, a computer system may not work correctly. It usually comes as part of the operating system for its core operations.
And Microsoft Windows mark these system files with a "system" attribute to protect them against mistaken deletion. And it’s located in a system folder, such as, C:\Windows\System32.
Like a corrupted file, if something goes wrong with it, you will lose access to it. If you try to open it, you will receive an error message that implies the file is corrupted or damaged. If the file is a system file, the situation may become much worse, such as, you may encounter a blue screen, saying, "your PC ran into a problem and needs to restart".
Besides Windows errors, the corrupted files sometimes are much smaller than they should be. Also, you can compare the potentially corrupted files to another file of a similar type for identifying.
Afterward, you may be eager to the causes for this error. In fact, behind corrupted or missing system files, there are many reasons, such as, computer crashes, sudden power drops or surges, update errors, disk problems, third-party programs, virus attacks, human error.
After identifying the system files are damaged and its potential reasons, you can repair system files using cmd. The system file checker is the best way to start the troubleshooting.
It's Windows 7 system files repair tool to scan your computer for corrupted system files and attempts to restore any it finds. And all of the following methods also apply to other systems, including Windows 8, 10, 11. You can try it first and then other ways.
After the sfc /scannow end, you may get if the system repair is fixed or not. If it says "Windows Resource Protection could not perform the requested operation", you can repair system files in safe mode or using CD/DVD that comes with your computer if your computer still have trouble. You can directly press Shift +F10 to open command prompt in the Windows Setup window.
Besides, you still can receive that there are still some unrepaired system files with error messages like “Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log %WinDir%\Logs\CBS\CBS.log. ”. You can view the SFC log for corrupted files and it will be introduced in the next way.
In this case, you should create a SFC log file with the CBS log file, then find the corrupt or missing Windows file and replace it with a good one.
▶ findstr /c:”[SR]” %windir%\Logs\CBS\CBS.log >”%userprofile%\Desktop\sfclogs.txt”
▶ takeown /f C:\Windows\System32\appraiser.dll
▶ icaclsC:\Windows\System32\appraiser.dll /Grant Administrators:F
▶ copy D:\Files\appraiser.dll C:\Windows\System32\appraiser.dll
▶ takeown /f C:\Windows\System32\appraiser.dll
Besides SFC, you still can try DISM command utility in Windows 8/10 to automatically fix SFC Scannow not working. And it will scan and repair system files in Windows 8/10.
▶ DISM /Online /Cleanup-Image /RestoreHealth
System Restore is a great choice if you cannot repair Windows 7 still now. It's to restore system files, Windows Updates, settings, and applications to an earlier state. And It’s easy to learn and operate, you can try it with the following steps.
System files are crucial to ensure your computer works as it is supposed to, thus, it's necessary to create a system image backup after repairing system files in Windows 7, which will include all of the system files. And you can easily restore your computer to a previous good state if you have a system image, even if your computer crashes, not to mention the corrupted system files. And all the computer failures can be solved completely.
Then, how to make it? You need the best free backup software - AOMEI Backupper Standard. With it, you can backup system to external hard drive, USB drive, cloud drive like Dropbox, Google Drive, etc. And below are useful useful features you can use:
Now, follow the steps below to backup system:
After the backup created successfully, you can use it for corrupted system files repair or other computer failure. Go to the Restore tab, choose Select Task, then find your image and select destination, click Start Restore.
If you cannot see any backup image in the Restore tab, go back to the main page of Restore tab and choose Select Image File as instead.
✍Tips:
▶ If your image is saved on the external hard drive and the computer is unbootable, you need to create a bootable disk first with its Create Bootable Media tool. And then, connect the drive containing your backup image and boot from it . At last, you can restore image from external hard drive based on instructions.
▶ Alternatively, you can create a recovery environment on your computer ahead of time. Once the recovery environment is created and enabled, the "AOMEI Backupper Recovery Environment" option will be added to the system boot menu page so that you can select to start the system from the recovery environment to restore images created by AOMEI Backupper.
Except for AOMEI Backupper Standard, you still can try one key recovery software - AOMEI OneKey Recovery. The difference is that this software allows you to save system images on a hidden recovery partition, which greatly avoids mistaken deletions and data loss risk.
And it enables you to set fast key ("F11" or "A") or boot menu to access this software quickly, even when it's slightly damaged. In addition, it not only supports Windows 7/8/10/11, but also supports Windows Server 2003/2008/2012/2016/2019/2022 including the R2 version. All operations are quite simple.
To backup system files, just choose OneKey System Backup after launching AOMEI OneKey Recovery. Then, select a way to backup your system and where to save it. Finally, click Start Backup.
Also, you can set compression or password protection for it. And backup frequency (daily, weekly, monthly) are also supported.
This article is the right place if your system files are corrupted. It provides you with 4 helpful ways to repair system files in Windows 7. And them also applies to Windows 8/8.1/10/11.
If you don't want to lose any data due this error or any other computer failure, you still need to create a complete system backup in Windows with AOMEI Backupper Standard or AOMEI OneKey Recovery, preferably a scheduled one. Since it will retain all of your changes util the recent one you create.
For advanced users, you still can do system clone to HDD/SSD with AOMEI Backupper. It can achieve the same effect, but the process is simpler. You just need to clone system once, and use it to replace hard drive directly, no restore required before using. If needed, please upgrade to AOMEI Backupper Professional first.