How to solve the boot failure caused by the main bootloader of the computer

The main boot sector of the hard disk is the most sensitive one in the hard disk, in which the main boot program is a part of it, this program is mainly used to detect the correctness of the hard disk partition, and determine the active partition, responsible for handing over the boot power to the active partition of the DOS or other operating system. If this section of the program is corrupted, it will not be able to boot from the hard disk, but the hard disk can be read and written from the soft or optical area. The way to fix this fault is relatively simple, using a higher version of DOS fdisk is the most convenient, when running with parameter MBR, it will directly replace (rewrite) the main boot program of the hard disk.

In fact, the main boot sector of the hard disk is created by this program, which contains the complete master boot program of the hard disk. Although the DOS version is constantly updated, the main boot program of the hard disk has not changed, from the current DOS with WindoS95, so as long as you find a DOS boot disk to boot the system and run this program can be repaired.

Hope it helps, hope, thank you.

Cause: There was an error in the boot file.

1. Connect the embedding U disk to the computer system.

Turn on the power of the computer to enter the boot USB flash drive interface.

2. On the boot interface of the USB flash drive, select Enter PE system.

3. Wait for the PE system and enter the PE system desktop.

4. On the PE system interface, click the start button.

5. In the Start menu, select the Program button.

6. Click the program button and click on the code to start the system to repair the fault.

7. Click the System Repair button to enter the Windows Repair boot boot interface.

8. Select the version of the system to be repaired, and click to repair.

9. After selecting the system, select the repair and recovery location. After confirmation, the repair is carried out, and then the system prompts that the Windows system boot boot repair is successful.

Although the win7 system is much more stable than other systems before, there will still be some problems, so how to solve the win7 boot boot failure? Let me take you to find out!

Win7 boot boot fault solution:

Fault 1: "HDD controller failue" The HDD controller fails.

Fault analysis: This kind of boot boot error is often due to the poor signal communication circuit between the hard disk and the hard disk controller.

Troubleshooting: Turn off the power and check if the power supply of the hard disk is resolved.

Fault 2: "Bad or Missing Command Interpreter" is displayed.

Fault division old collapse: This boot boot error is often due to the system disk Chinese has been damaged or deleted.

Troubleshooting solution: Use the boot disk to boot, and then repair the file, if the file is damaged due to the virus, you should carry out anti-virus operation.

Fault 3: "diskette boot failue" floppy disk boot fails.

Fault Analysis: This boot error is often caused by damage to the system disk.

Troubleshooting solution: Replace the normal boot disk.

Fault 4: "Disk boot failure", try to boot with floppy disk, and the "invalid driver specification" prompt appears.

Failure Analysis: This boot boot error is often due to an error'Operation, illegal programs or viruses.

Troubleshooting: A program that restores the boot area or a partition table, or you can repair it from a new partition.

Restore BIOS factory settings to try,If it doesn't work, use PE to go in and use diskgeniu to repair the partition table and try,If it doesn't work, you can only find the system installation disk to reinstall。

The disk partition table is faulty.

PS: The operation of automatically repairing partition tables is through the process of finding the backup partition table and copying it to the corresponding sector.

Workaround:1Copy the DiskGenius software to the DOS boot disk.

2.Run DiskGenius directly.

3.Once you enter the main interface of DiskGenius, press F10 to easily restore the disk partition table automatically.

The second scenario:

The disk boot partition is missing.

Solution: Use Professor U's boot partition repair function to repair the disk boot partition.

Hope it helps!