1, under normal circumstances, the computer will have a chance of self-checking. Assuming it's okay. You will be prompted that the system cannot be started. You can choose safe mode to start the computer for repair, or return to the last normal situation.
2. Assume that the fault still exists. Then it is recommended to reinstall the operating system.
The author is a person who likes learning.
Result. I inquired about what files the computer started and read online, so as to have a deeper understanding of the computer and ensure that it will not be used in the future.
Get the following basic information: when the computer is started, many key files will be loaded (during system startup, IO.sys, MSDOS.sys, Config.sys, Command.com, Autoexec.bat, System.ini, Win.ini, NTLDR, Boot.ini, ntdetect.com, ntokrnl.exe, Ntbootdd.sys, Winlogon.exe, etc. ).
However, there are not many files that affect the boot. For example, the following is the damage in the system, which will cause the system to fail to start normally:
IO。 SYS: the default is the system boot file in the system disk folder under Microsoft Windows operating system. Without it, the system can't boot without detecting the operating system (students who like to install dual systems should pay attention to this). You can't get up without paying attention to the computer. I have experienced it personally.
MSDOS。 SYS: It is a key file in Microsoft's non-NT kernel operating system, and it is one of three kernel files of DOS (three kernel files are COMMAND.COM and MS-DOS respectively). System, IO. SYS)。 There is an introduction here).
Configuration. SYS is a key file in DOS system, and its configuration directly affects the use and efficiency of the system. Assuming improper configuration, many programs may not execute normally.
Orders. A command interpreter. It is a DOS SHELL, a DOS command file and a DOS system component in MS-DOS/Windows 9x. DOS actively executes the file autoexec.bat at the kick-off meeting. Generally, programs that are used every time are loaded. Such as: path (setting path), smartdrv (disk acceleration), doskey (keyboard management), set (environment variable setting) and so on.
System.ini:: This file defines the modules needed by the WINDOWS system. Related keyboard, mouse, graphics card, multimedia driver, standard font, shell program, the program defined here should be loaded when starting WINDOWS. Therefore, it is essential. Otherwise, some devices can't be used or can't enter WINDOWS at all (the computer can't boot, or most of the errors are caused by this file).
Win.ini: It is a basic system configuration file of Windows system. Victory. The INI file consists of several parts. Each section consists of a set of related settings. File configuration is an essential file for system configuration. It saves some options, such as influencing the running environment of Windows, controlling the display form of system interface and the position of form and mouse, linking specific file types with corresponding applications, and listing the default size, layout and text color settings of help forms and dialog windows.
NTLDR: It is a hidden read-only system file. Located in the root folder of the system disk, used to load the operating system. It is the boot file of Windows NT 4.0/Windows 2000/Windows XP/Windows Server 2003. So it should be backed up when the system is normal.
Boot.ini: When booting, it is assumed that there are two or more systems. Bootloader will actively call the boot.ini file, and the operating system selection interface will appear.
NTDETECT。 COM: It's the system startup file in the computer. Executable file. It will collect system information, and when information is detected. There will be a windows logo on the screen (this is the inference that the computer can't start.
Ntoskrnl.exe: It is an important process file of Windows operating system. Ntldr calls ntoskrnl.ex when the system enters the kernel calling phase after the pre-boot and startup phase.
E. In the Windows system, ntoskrnl.exe has stored the startup logo screen (it can be changed with more software, but it is not recommended).
NtBOOTdd.sys: For some files, Windows kernel file (ntoskrnl.exe), hardware abstraction layer file (hal.dll) and boot driver file are loaded.
Kernel32.dll: It is a very important 32-bit dynamic link library file in Windows 9x/Me, belonging to kernel-level file. It controls the memory management, data input and output operations of the system.
Interrupt processing, when Windows starts, kernel32.dll stays in a specific write-protected area in memory, so other programs can't occupy this memory area.
Winlogon.exe: It is the process of managing user login, login and logout. Some software can parse the login information inside. Pay attention to this.