1. Test and Replace Faulty RAM
- Press Windows + R, type mdsched.exe, and press Enter.
- Choose Restart now and check for problems.
- Let Windows Memory Diagnostic complete the scan.
- If errors appear, replace the faulty RAM module(s) and ensure they are properly seated.
2. Update or Roll Back Device Drivers
- Open Device Manager - Expand each category.
- Right-click devices with warning symbols - Select Update driver.
- Use the manufacturer’s official driver software (for GPU, chipset, or storage).
- If the issue started after a driver update, choose Roll Back Driver.
3. Disable Overclocking and Restore BIOS Defaults
- Restart your PC and enter BIOS/UEFI (usually by pressing Del or F2).
- Select Load Optimized Defaults or Restore Default Settings.
- Disable CPU, RAM, and GPU overclocking features.
- Save changes and restart your computer.
4. Scan for Registry and System File Corruption
- Open Command Prompt as Administrator.
- Run the following commands sequentially:
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth
- Wait for the repair process to complete, then reboot the system.
5. Perform a Clean Boot to Isolate Conflicts
- Press Windows + R, type msconfig, and press Enter.
- Under the Services tab, check Hide all Microsoft services → Click Disable all.
- Go to the Startup tab - Open Task Manager - Disable all startup programs.
- Reboot and check if the BSOD reoccurs.
6. Update Chipset and Firmware
- Visit your motherboard or system manufacturer’s support page.
- Download and install the latest chipset drivers, BIOS, and firmware updates.
- Restart the PC after installation to apply changes.
7. Check Storage Health Using CHKDSK
- Open Command Prompt as Administrator.
- Run the following command:
- chkdsk C: /f /r /x
- Wait for the disk scan to finish and restart the system.
8. Scan for Malware or Rootkits
- Boot Windows in Safe Mode with Networking.
- Use Windows Defender Offline Scan or a trusted antivirus.
- Quarantine or remove any detected threats.
- Restart the PC and verify if the BSOD persists.
9. Restore the System Using System Restore
- Open Control Panel - Recovery - Open System Restore.
- Select a restore point before the BSOD occurrence.
- Follow the prompts and reboot once restoration completes.
10. Perform an In-Place Upgrade or Clean Installation
If all else fails:
- Use the Windows Media Creation Tool - Choose Upgrade this PC now - Keep personal files and apps.
- This process reinstalls core system files while preserving user data.
- If the BSOD continues, perform a clean installation for a complete system reset.
The 0x00000099 (INVALID_REGION_OR_SEGMENT) BSOD often originates from faulty memory, corrupted drivers, or invalid system configurations.
To resolve it effectively:
- Test and replace bad RAM modules.
- Update or roll back problematic drivers.
- Run SFC and DISM to repair system corruption.
- Reset BIOS and disable overclocking for stable kernel access.
- Apply chipset and firmware updates to prevent memory region conflicts.
If the issue persists, perform a clean installation to ensure full system recovery. Regular driver updates, disk maintenance, and hardware diagnostics are essential to prevent future BSODs and maintain stable Windows performance.