Common Computer Error Codes

Error Codes, descriptions, and possible repair

1. Error Code: 0x80070005
Description: Access Denied – often occurs during Windows updates or when accessing restricted files.
Possible Repair: Run the program as administrator, check file/folder permissions, disable antivirus temporarily.

2. Error Code: 0x0000007B
Description: INACCESSIBLE_BOOT_DEVICE – Windows cannot access the system partition during startup.
Possible Repair: Check BIOS boot settings, run Windows Startup Repair, update or reinstall storage drivers.

3. Error Code: 0xc000000e
Description: Boot Configuration Data (BCD) is missing or corrupt.
Possible Repair: Boot from Windows installation media, open Command Prompt, run bootrec /fixboot and bootrec /rebuildbcd.

4. Error Code: 0x80070490
Description: Windows update error – system file corruption or registry issues.
Possible Repair: Run System File Checker (sfc /scannow) and DISM (DISM /Online /Cleanup-Image /RestoreHealth).

5. Error Code: 0x800F081F
Description: Missing or unavailable .NET Framework files.
Possible Repair: Enable .NET through Windows Features, download the required version manually, or use DISM to restore components.

6. Error Code: 0xC000021A
Description: Fatal system error – critical system process has failed.
Possible Repair: Boot into Safe Mode, uninstall recent software or drivers, perform System Restore.

7. Error Code: 0x000000EF
Description: CRITICAL_PROCESS_DIED – a critical Windows process terminated unexpectedly.
Possible Repair: Boot into Safe Mode, run diagnostics, update drivers, check system files.

8. Error Code: 43 (Device Manager)
Description: Windows has stopped this device because it has reported problems – often GPU or USB issues.
Possible Repair: Reinstall or update drivers, unplug and reconnect the device, check for hardware failure.

9. Error Code: WHEA_UNCORRECTABLE_ERROR (Blue Screen)
Description: Hardware failure – commonly CPU, RAM, or motherboard.
Possible Repair: Check temperatures, run memory tests, update BIOS/firmware, test and replace faulty hardware.

10. BIOS Beep Codes
Description: Series of beeps at startup indicating hardware failures (RAM, CPU, GPU).
Possible Repair: Refer to your motherboard manual for beep code meanings, reseat or replace hardware components as needed.