Solve the problem of NTLDR is missing boot error

Due to anti-virus, I accidentally deleted the NTLDR under the system disk C. Then restart, it prompts: "NTLDR is missing, Press CTRL + ALT + DEL to restart", can not boot normally. Analysis: NTLDR file is the boot file of win nt/win200/WinXP. When this file is lost, the system will prompt “NTLDR is missing, Press CTRL+ALT+DEL to restart”, and ask to press any key to restart, it is not correct. enter the system. Therefore, backup should be given when the system is normal.
Solution:

1, if you have got XP installation disk into the drive, bios boot device selection in the first drive, general Tomato Garden version of XP installation disk with system boot Repair (shortcut A, specific disk only), select the "XP in the first partition of the first hard disk", perform boot repair, you can successfully enter the system. After entering the system, open the XP installation disk, find these two files: G:\\i386\ tldr and G:\\i386\ tdetect.com (my G drive is the CD-ROM drive), copy them to the root directory of the c drive, after When you restart, you can boot normally. When you boot, you may see the usual >>>> becomes?????, don't worry, after starting it once, it will be normal later. This is the system for you. Write the BOOT.INI file.

Tips: If you do not find ntldr, ntdetect.com these two documents, can be downloaded here: NTLDR file.

the menu that appears when you start using the Chinese version of WindowsXP as garbled who can be copied to the root directory of the C drive in bootfont.bin after entering WindowsXP WindowsXP CD I386 directory under the can, such as by the use of the English version of WindowsXP Bootfont.bin can be deleted from the root directory of the C drive.

Solution two:

fix the following steps: 1, the WindowsXP installation disc into the drive 2, is set to enter the BIOS Boot From CD-ROM 3, when the display to & ldquo; Press When any key to boot from the CD”, press any key 4. When entering the Windows XP installation menu, press the ““R” key to enter the fault recovery station. 5. Press “1” and enter to enter your Windows installation. 6. Enter your Administrator account and password. 7. Copy the two files to the partition where the system is located. Suppose your CD-ROM drive is the F drive letter. Follow the example below: copy F:\\i386\ tldr c:\\ copy F:\\i386\ tdetect.com c:\\ After rebooting, it will be OK.

Solution three:

repair WindowsXP start the system: 1. set using the CD-ROM drive in the BIOS boot the computer 2. Insert the WindowsXP CD in the CD drive to start the computer 3. Let the CD to automatically execute There will be three choices when you stop. Press [R] to repair the computer and you will be asked which system to enter. Please select the WindowsXP code and enter the Administrator password (same as the Administrator password you entered during installation). If you don't have the password, press the Enter key. 4. Type Fixboot under C:\\Windows> and press [Y] to confirm 5. Type CD under C:\\Windows> 6. Type ATTRIB-HNTLDR under C:\\> 7. at C:\\ >Type ATTRIB-SNTLDR 8. Type ATTRIB-RNTLDR under C:\\> 9. Type ATTRIB-HNTDETECT.COM under C:\\> 10. Type ATTRIB-SNTDETECT.COM under C:\\> 11. Type ATTRIB-RNTDETECT.COM under C:\\> 12. Type COPY X:\\I386\\NTLDR C:\\ under C:\\> (Note: X: is the same as the CD-ROM drive code). Type COPY X:\\I386\\NTDETECT.COM under C:\\> C:\\ 14. After removing the WinXP CD and typing [Exit] will restart the computer. 15. In the BIOS, select the hard disk to start the computer. 16. Use the Chinese version of WindowsXP. If the menu is garbled, you can enter Windows XP. The bootfont.bin under the I386 directory of the Windows XP CD can be copied to the root directory of the C drive. For example, if you use the English version of Windows XP, you can remove the bootfont.bin from the root directory of the C drive.

added 1: Usually the system boot process is such that:

1, 2 Power On Self Test program begins, the master boot record is loaded into memory, and the program started 3, active The boot sector of the partition is loaded into the memory. 4. The NTLDR is loaded and initialized from the boot sector. 5. Change the real mode of the processor to the 32-bit smooth memory mode. 6. NTLDR starts running the appropriate small file system driver. The small file system driver is built into NTLDR and can read FAT or NTFS. 7. NTLDR reads the boot.ini file. 8. NTLDR loads the selected operating system. * If NT/XP is selected, NTLDR runs Ntdetect.com. For other operating systems, NTLDR loads and runs Bootsect.dos and passes control to it. The windows NT process ends. 9. Ntdetect.com searches the computer hardware and passes the list to NTLDR to write this information into HKEY_LOCAL_MACHINEHARDWARE. 10. Then NTLDR loads Ntoskrnl.exe, Hal.dll and system information collection. 11.Ntldr search system information collection, and load the device driver configuration to the device when you start to work 12.Ntldr give control to Ntoskrnl.exe, then, the end of the boot process, loading phase begins

Supplement 2 : the failure of Microsoft's official website explained
receive when you start your computer
& ldquo; NTLDR is missing & rdquo; (missing NTLDR) error message

symptoms: when you copy multiple files to use NTFS After the root folder of the file system's boot volume, you may receive the following error message the next time you start your computer: NTLDR is missing Press CTRL+ALT+DEL to restart. If you delete files copied to the root folder, the main file table (MFT) The allocation index does not fall to its original size.

reason: If the MFT root folder is severely fragmented This problem may occur. If the MFT root folder contains multiple files, the MFT becomes so fragmentary that an additional allocation index needs to be created. Because the files are mapped alphabetically into the allocation index, the NTLDR file may be pushed into the second allocation index. If this happens, you will see the error message described in the "Symptoms" section of this article. In general, files are not written to the root folder. This can happen if a program periodically creates and deletes temporary files in the root folder, or accidentally copies many files to the root folder.