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[Solved] How to Fix BSOD Error “FAT FILE SYSTEM (fastfat.sys)” on Windows 10

Blue Screen of Death (BSOD) error with error detail FAT FILE SYSTEM (fastfat.sys) restarts OS to avoid further damage to the system. FAT File System Error on windows 10 happens due to outdated Windows, outdated device drivers, corrupted system files, corrupted drives, conflicting folder protecting / encryption applications, false positive by Anti-virus and corrupted Windows. Perform the below solution to resolve this error.

[Solved] How to Fix BSOD Error "FAT FILE SYSTEM (fastfat.sys)" on Windows 10

[Solved] How to Fix BSOD Error “FAT FILE SYSTEM (fastfat.sys)” on Windows 10


Content Summary

Solution 1: Diagnose Hardware (HP Startup Manager)
Solution 2: Execute System File Checker Command
Solution 3: Execute ChkDsk Command
Solution 4: Execute Driver Verifier Manager
Solution 5: Uninstall Folder Protection / Encryption Applications

Solution 1: Diagnose Hardware (HP Startup Manager)

Step 1: Switch off the computer.

Step 2: Power on the computer and press the Esc button immediately in order to open the HP Startup Menu.

Step 3: Press the F2 button when HP Startup Menu appears.

Step 3: Go to Components Tests > Hard Drive > Hard Disk test.

Step 4: Go to Components Tests > Memory > Memory test.

Step 5: If any error reported during the test, repair or replace it accordingly.

Solution 2: Execute System File Checker Command

Step 1: Boot into Safe Mode with Command Prompt.

Step 2: Type sfc /scannow and press Enter.

Step 3: Wait until the message The operation completed successfully or Windows Resource Protection did not find any integrity violations show then close Command Prompt.

Step 4: Reboot system normally.

Solution 3: Execute ChkDsk Command

Step 1: Boot your system into Safe Mode or Advanced Repair Options to go into the command prompt.

Step 2: In the Windows Setup screen, go to Next > Repair your computer > Troubleshoot > Advanced options > Command Prompt.

Step 3: In the command prompt, type: chkdsk /f /r and press Enter.

Solution 4: Execute Driver Verifier Manager

Step 1: Run Command Prompt as Administrator.

Step 2: In the command prompt, type: verifier and press Enter.

Step 3: In the Driver Verifier Manager dialog box, select Create standard settings and press Next.

Step 4: Select Automatically select all drivers installed on this computer and press Next.

Step 5: Windows will start to scan for errors.

Step 6: Restart the computer.

Step 7: It will start to analyze all the drivers installed on the computer for issues. If any broken drivers are found, then update it.

Solution 5: Uninstall Folder Protection / Encryption Applications

Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook

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