Frequent Partition Error

SYMPTOMS:
When we try to boot after hardware testing procedures, we see just blank screen without any messages
Solution:
Please run Partition Table Doctor, it can automatically check and repair partition table error.

SYMPTOMS:
Not found any Active Partition in HDD
Solution:
Please run Partition Table Doctor, and it will report some messages as follows:
ERROR: No Active Primary partition on Harddisk1.
Do you want set Active primary partition on Harddisk1?
Please click Yes button to solve this problem.

SYMPTOMS:
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER
Solution:
Please run Partition Table Doctor, and it will report some messages as follows:
ERROR: No Active Primary partition on Harddisk1.
Do you want set Active primary partition on Harddisk1?
Please click Yes button to solve this problem.

SYMPTOMS:
Invalid partition table
Solution:
Please run Partition Table Doctor, and it will report some messages as follows:
ERROR: Invalid Boot Indicator of primary partitions on Harddisk1.
Do you want correct the error?
Please click Yes button to solve this problem.

SYMPTOMS:
Missing operating system
Solution:
Please run Partition Table Doctor, and it will report some messages as follows:
ERROR: Partition 1 on Harddisk1 Absolute start sector is 16191.
The right start sector is 63.
Do you want correct the error?
Please click Yes button to solve this problem.

SYMPTOMS:
Boot infection or Boot virus
Solution:
Please run Partition Table Doctor, and choose Rebuild MBR function on Operations menu. More details see Rebuild MBR.

SYMPTOMS:
Invalid Drive Specification messages. We want to find my lost partition.
Solution:
Please run Partition Table Doctor, and choose Rebuild Partition Table function on Operations menu. More detail sees Rebuild Partition Table.

SYMPTOMS:
- Invalid media type reading drive
Abort, Retry, Fail?
- File system is displayed as RAW
- Windows may ask if you want to format the drive
- File names contain weird characters
- Sector Not Found messages
Solution:
Please run Partition Table Doctor, and choose Fixboot function on Operations menu. More detail sees Fixboot.