Blue screen (stop code) errors

• CRITICAL_PROCESS_DIEDA process Windows cannot run without stopped unexpectedly. Damaged system files, a bad driver or a failing drive are the usual causes.
• IRQL_NOT_LESS_OR_EQUALA driver or Windows tried to use memory it was not allowed to. It is usually a faulty driver, sometimes bad RAM.
• DRIVER_IRQL_NOT_LESS_OR_EQUALA specific driver accessed memory it should not have. The blue screen often names the file, for example a .sys file.
• PAGE_FAULT_IN_NONPAGED_AREAWindows looked for data in memory that should always be there and did not find it. Causes: a bad driver, faulty RAM, or antivirus.
• SYSTEM_SERVICE_EXCEPTIONA system process hit an error it could not recover from. Graphics drivers and antivirus are the most common causes.
• KMODE_EXCEPTION_NOT_HANDLEDA driver caused an error Windows could not handle.
• SYSTEM_THREAD_EXCEPTION_NOT_HANDLEDA system thread crashed, almost always because of a driver. Graphics drivers are the top cause.
• DPC_WATCHDOG_VIOLATIONA driver took too long to respond. Storage drivers and old SSD firmware are the classic cause.
• MEMORY_MANAGEMENTWindows found a serious error in how memory is used. Faulty RAM is a common cause, along with drivers.
• INACCESSIBLE_BOOT_DEVICEWindows lost access to the drive it boots from. Common after a BIOS setting change (SATA mode), a failed update, or a dying drive.
• UNMOUNTABLE_BOOT_VOLUMEWindows could not open the drive it boots from. Usually file system damage, sometimes a failing drive.
• WHEA_UNCORRECTABLE_ERRORThe hardware itself reported an error it could not fix: processor, memory, power or overheating.
• VIDEO_TDR_FAILUREThe graphics card stopped responding and Windows could not reset it. The file named (nvlddmkm.sys for NVIDIA, atikmpag.sys for AMD, igdkmd64.sys for Intel) tells you which.
• CLOCK_WATCHDOG_TIMEOUTOne processor core stopped responding.
• KERNEL_SECURITY_CHECK_FAILUREWindows detected corrupted data in the kernel. Usually an incompatible driver, sometimes RAM or disk errors.
• BAD_POOL_HEADERA driver damaged memory that Windows manages. Antivirus and old drivers are common causes.
• NTFS_FILE_SYSTEMWindows hit a problem in the file system on a drive.
• KERNEL_DATA_INPAGE_ERRORWindows could not read data from the drive into memory. A failing drive, loose cable or bad RAM are typical.
• DRIVER_POWER_STATE_FAILUREA driver did not respond while the PC was going to sleep, waking, or shutting down.