Windows Crashes & Boot Recovery
Stop codes, bugchecks, boot configuration damage and recovery-environment work.
50 articles
0x000000ED
UNMOUNTABLE_BOOT_VOLUME 0x000000ED – Windows cannot mount the C: drive
0x000000ED means the boot volume failed to mount. Repair the file system with chkdsk from WinRE, then rebuild the boot…
0x800F081F
DISM RestoreHealth fails with 0x800F081F or 0x80073712 during recovery
0x800F081F and 0x80073712 mean the component store is damaged or the repair source is missing. Point DISM at a matching…
0x00000149
REFS_FILE_SYSTEM 0x00000149 and file system filter driver bugchecks
0x00000149 is a ReFS error with no published cause. The related 0x108, 0xF9 and 0x10C are documented filter driver faults…
0x0000007B
INACCESSIBLE_BOOT_DEVICE 0x0000007B after a BIOS or clone change
0x0000007B means Windows cannot reach the boot disk. Match the SATA or RAID mode to the installed driver and re-enable…
0x8007045D
Disk I/O device error 0x8007045D during Windows repair, backup or setup
0x8007045D and its sibling CRC errors mean the drive cannot read or write reliably. Test SMART, replace cables and clone…
0x00000051
REGISTRY_ERROR 0x00000051 and BAD_SYSTEM_CONFIG_INFO 0x00000074 at startup
0x00000051 means a registry hive is damaged or unreadable. Restore the hives from RegBack or a restore point and check…
0x00000025
NPFS_FILE_SYSTEM 0x00000025 and cache manager crashes on file servers
0x00000025 and the redirector bugchecks come from named pipe, SMB and cache pressure faults. Patch the server and remove stale…
0xC000000F
Boot manager error 0xC000000F and 0xC0000225 – BCD file is missing
0xC000000F and 0xC0000225 mean the boot configuration data cannot be read. Rebuild the BCD store and EFI partition from a…
0xC0000221
0xC0000221 bad image checksum and 0xC0000428 signature check failure at boot
0xC0000221 and 0xC0000428 mean Windows refused a file whose checksum or signature did not verify. Repair the file, or redeploy…
0x00000101
CLOCK_WATCHDOG_TIMEOUT 0x00000101 – a CPU core stopped responding
0x00000101 means a logical processor missed its clock interrupt. Undo overclocking, update BIOS and microcode, then test CPU stability.
0xC000021A
STATUS_SYSTEM_PROCESS_TERMINATED 0xC000021A and CRITICAL_PROCESS_DIED 0x000000EF
0xC000021A and 0x000000EF mean a critical user mode process died. Repair system files with SFC and DISM offline, then undo…
0x00000019
BAD_POOL_HEADER 0x00000019 and BAD_POOL_CALLER 0x000000C2 explained
0x00000019 and 0x000000C2 mean a driver damaged the kernel pool. Use Driver Verifier and pool tagging to name the module,…