1. There are several reasons for the possible loss of computer data
1. Infection with viruses.
2. Misoperation: misformatting, mispartitioning, cloning, deleting, power failure, etc.
3. Hardware failure: the hard disk is bad, and the hard disk is completely damaged and cannot enter the system.
4. In addition to the hard disk is damaged, other components of the computer are damaged, and files and data will not be lost. For example: bad CPU, bad memory, bad graphics card, bad motherboard, etc., will not lose your data, just remove the hard disk and hang it on other good computers (use the mobile hard disk enclosure to connect the USB interface externally, the SATA interface inside, PCI-E M.).2 interfaces, etc.), you can read the data on the hard disk.
2. Attention should be paid to the following phenomena.
Unable to enter the operating system, files cannot be read, files cannot be opened by associated applications, files are missing, partitions are missing, the display is garbled, and so on. In fact, the causes of logical data loss are complex, with specific symptoms occurring in each case, or multiple symptoms occurring at the same time.
3. In general, as long as the data area is not completely overwritten or written more than three times, then the possibility of recovery is very high.
4. What data is lost and can I get it back?
1. Accidental deletion: The loss of files caused by misoperation, this kind of accidental deletion, and the success rate of data recovery is very high. Even if you do something else later, you still have a good chance of resuming it.
2. Formatting by mistake: After the system crashes and cannot be turned on, format and reinstall the system, this situation can also be recovered.
3. Mis-partitioning and mis-cloning: In the use of software tools such as PQ Magic and Ghost, data loss is caused by misoperation, and data recovery can also be carried out on the hard disk, but the recovery difficulty is relatively large.
4. Virus destruction: The probability of virus destroying data is very large, and there are many ways to destroy data
1) Delete and change the partition table of the hard disk, so that the user can not find the drive letter.
2) Delete files, mainly destroy (word, excel, jpg, mpg, etc.) these types of files, such as the latest mobile killer will fully delete the word document in the hard disk, causing great damage.
For data loss caused by virus destruction, there is a special software to recover, and the success rate is also very high.
5. File corruption: Most of the file corruption is related to anti-virus, the infected file cannot be opened after anti-virus, and other ways can also lead to file corruption, such as installing a certain software, running a certain program, or encountering a hacker attack.
5. What should I do if important data is lost?
1. After discovering the data loss, do not do any operations, especially write operations to the hard disk, otherwise the data will be overwritten.
2. If the C drive loses data, shut it down immediately, because the virtual memory and temporary files generated when the operating system is running will also destroy the data.
3. Don't use the Windows system restore function, this will not get back the lost files.
4. Don't use antivirus software, these operations can't get back the lost files, but will lose more data.
5. If you don't know how to recover data, you can ask an expert to recover it. If you have lost files that are not very important, you can try the data recovery function of DiskGenius software. This function can only recover part of the data, and if you want to recover particularly important confidential data in depth, it is better to spend a little money and ask a professional to do it.
6. Hard disk repair technology.
It refers to opening the shell of the hard disk and operating the inside of the disk cavity in a highly clean environment to replace or repair some damaged originals inside the hard disk to achieve the purpose of recovering data.
Hard disk is a set of mechanical, electrical, magnetic in one of the high-precision storage equipment, its internal precision components are relatively fragile, their service life and the outside temperature, humidity, stability and other environment have a great relationship.
Common hard disk faults include head damage, head aging, head circuit damage, head assembly deformation, platter scratching, motor stuckness, etc., these common faults need to be repaired by surgery.
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