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.