windows7 system enters the welcome interface, can not enter the user password; the system starts blue screen; disk partition becomes ram format; suddenly power off, restart the computer can not enter the system; The running speed is very slow, the disk indicator is very busy, and the antivirus software does not detect the virus. How to deal with these problems, after reading the following introduction you will know how to do it. This article focuses on: chkdsk, disk repair, file repair. Reading difficulty: primary disk practical range: mechanical hard disk [example of fault phenomenon] 1, windows7 system enters the welcome interface, can not input user password, that is, the keyboard does not respond, but the keyboard operation bios, F8 function keys, etc. before entering the welcome interface Normal, you can enter the safe mode; 2, the blue screen in the system startup process, that is, the blue-white screen display, the low-end display stop: 0x???????, that is, the blue screen code. 3. The disk partition becomes the ram format. 4, suddenly power off, restart the computer can not enter the system; 5, the computer runs very slowly, the disk indicator is very busy, anti-virus software can not detect the virus. When one or more of the above failures occur, the disk should be suspected of having a bad fan and file corruption. Although there are all kinds of professional software, the windows system has prepared a small tool for us, which can improve efficiency. [Usage] chkdsk is a command line tool. In the system or in safe mode, open the command prompt window, you can execute this command; use the windows original system installation disk, enter the graphical interface and wait for us to move, press shift+F10 The key combination can be used to bring up the command prompt window or execute this command. Below are two of the most useful command formats. 1, repair the C disk damaged file or partition format: chkdsk c: /F parameter /F means repair files. The fix here is not to fix the file format corruption problem, such as one of your word documents, the damage received in the incomplete data received on the network can not be repaired. When your file is saved on the hard disk, it is normal, and it can't be opened after a sudden power failure. This kind of repair is more effective. Because the file is saved to the disk, it is not continuously maintained, but is divided into a number of blocks to be saved. The divided data blocks need to be linked by link information, and there is also verification information. Once this information is corrupted, it will cause the entire file to be abnormal, and chkdsk will drop the problem. 2, repair disk bad fan disk use time, illegal shutdown, etc., may cause sector damage, chkdsk can detect bad fans and repair (repair principle will not be discussed in this article). The command execution method is as follows: The chkdsk c /R/R parameter actually contains the /F parameter function, and the execution speed is much slower. You can try the /F parameter first, and you can't consider the /R parameter. This article comes from [System Home] www.xp85.com