System problems continue, no need to reinstall easily

Computer store news Windows XP is currently widely used operating system, its stability and ease of use is beyond doubt. But it also has a headache like a human being, and there is a point of "cold" symptoms. It is not uncommon to get a bad cold when it is serious. At this time, many people will think of reinstalling the system, but reloading The system has one of the biggest troubles, that is, it needs to be backed up before, otherwise it is very difficult to restore to the previous usage habits. Once you encounter a system that can't start up, you don't want to back up. What should you do? I will give it here. You have a better answer. First, the Windows environment If your computer can also enter the Windows environment, then congratulations, in this case even if there is a problem in the system, it will not be a big problem. In this case, the following methods usually appear: 1. Unzip some important files from the installation CD. If Windows XP has already entered, but found that some files are missing, the most common one is the loss of Rundll32.exe. Here's an example of restoring this file: Click “Start”/“Run”, enter expand x:\\i386\\Rundll32..ex_ c:\\windows\\system32\\Rundll32.exe in the window (x stands for CD-ROM drive letter, rundll.ex_ stands for files that need to be decompressed, c:\\windows\\system32 refers to the target folder, which should be determined according to the specific situation), and the lost files can be restored to the system. Of course, you can also copy the file directly from the other normal running machine to the corresponding directory of the machine. In addition, for the lost dll link file, you can also use Regsvr32 this program file to restore, you need to enter Regsvr32 a.dll in the run window when recovery (a.dll represents the missing link file), will be registered after the carriage return Register the file in the table, then click “OK” in the pop-up dialog box. 2. DLL file recovery The name of the DLL file is a dynamic link library file, which usually exists in the Windows\\system32 folder. The file is lost or replaced. Generally, it can also enter Windows, but the system will often report an error when executing the application. This type of error can usually be passed through Sfc (System File Checker). Sfc is a command-line program that must be run under Windows XP's "Command Prompt" window. In order to implement multiple functions, sfc provides multiple parameters, using the format: sfc/parameter 1 /parameter 2…… The parameters should be separated by a space. Here are a few of the main parameters for you to use: /scannow: used to scan all protected system files, is also a widely used parameter, it is mainly to replace the wrong system files with the correct system files. This parameter can also put the latest version of the protected system file into the DLLCache folder, and may require the Windows XP installation CD and its patch file during the operation. If you do not have the CD, you will back up the installation file on the hard disk. You can do this by modifying the registry. In the Run window, type Regedit to enter the Registry Editor window, find the HKey_Local_Machine\\software\\Microsoft\\Windows\\CurrentVersion\\setup item, and modify the Installation Sources, ServicePacksourcePath, and SoutcePath keys in the right window to install the system on the hard disk. The program path, so you don't have to insert the Windows XP installation CD when you fix it. /scanonce: Performs a scan of the protected system files on the next boot, and also needs to read the installation CD and patch files. This command is often used when an error occurs in the /scannow command. /scanboot: Scans the protected system files every time you start the system, which can greatly reduce the startup speed, generally not used, the same as the /scanonce parameter. /purgecache: Used to clear the file cache (this file is under %systemroot%\\system32\\dllcache by default) and scan all protected system files immediately, often followed by “/cachesize=x” This parameter, this parameter is used to set the file cache size, in MB. If the parameter is set smaller, it can save hard disk space. If the setting is larger, the system file can be protected, and more system files may be restored as much as possible. . Under normal circumstances, you can restore the system files by executing sfc/scannow. The time is usually about 10 minutes. 3. System Restore Shows If you use sfc/scannow or you have an error, you may want to use the system restore function to restore the system. This method is especially convenient when there is a system failure after adding or deleting certain software. Click “ Start → All Programs & Rarr; Attachments & Rarr; System Tools & Rarr; System Restore & rdquo;, Run & ldquo; System Restore & rdquo; command, open & ldquo; System Restore Wizard & rdquo;, select & ldquo; restore my computer to An earlier time & rdquo;, click & ldquo; next & rdquo;, select the date and then follow the wizard to restore. The system restore function described above is operated in Windows XP. If you cannot enter the Windows XP system, you can solve the following methods: (1) Run the system in safe mode. If Windows XP can enter the safe mode, you can run the system in safe mode. Recovery, the same steps as "Restore Restore Points". (2) System Restore in DOS Mode If the system cannot enter safe mode, press F8 (3) to restore the system when the restore point is lost. The System Volume Information folder is preset in Windows XP, usually hidden, it saves the system. Restored backup information. Open the View “ Show All Files and Folders property, cancel “ Hide Protected System Files>; before selecting, you will see the “System Volume Information” folder on each disk. Use this folder for data recovery. Right-click on the "My Computer" option, select "Properties", "/Restore", and then click the "Remove System Restore on all drives" checkbox and click the "Applications" button. This is done to rebuild a restore point. Then open the “System Restore” command to find the missing restore point. The above description is for the FAT32 partition. If the system partition is NTFS, there will be some trouble when starting the System Volume Information folder. Because you may not have been added to the System Volume Information security properties, you will not be able to access the file. Right click on the folder, select “ldquo;property” in the pop-up menu, open the System Volume Information property dialog box, select the “Security” tab, click the “Add” button to open the “Select User” Or group” window, click the “Advanced” button in the lower right corner of the window, then click the “Find Now” button to list all users and groups on the computer and select your current account or account. After the name of the group, & ldquo; determine & rdquo;. The selected account is added to the System Volume Information security properties and the folder is accessible. Second, in the DOS environment If the computer has not been able to enter WindowsXP, then do not have to worry too much to reinstall the system, because there are still some methods. 1. Security Mode Press F8 when Windows XP starts, select “Safe Mode”, if it can start successfully, it will start normally after exiting. 2. The last correct configuration The basic operation is the same as the security mode, but it should be noted that the NumLock indicator on the keyboard must be turned off before selecting this carriage return. 3. Failure recovery station (1) Console installation 1 Console hard disk installation Insert the Windows XP installation CD, click “ Start & rdquo; /& ldquo; Run & rdquo;, enter \\i386\\winnt32.exe /cmdcons command and press Enter, appear In the dialog box that displays the "Recovery Console" installation option, click "Yes" to confirm, restart the computer and you will see the "Microsoft Windows Recovery Console" menu in the boot menu. Go to the “Recovery Console”. 2 console CD installation First set the boot order to CD-ROM in the BIOS, then insert the WindowsXP installation CD into the CD-ROM drive system, when the screen displays "Welcome to use the installer", press R to start the recovery console. Then the system will ask for the administrator password, and then enter the fault recovery station. If multiple systems are installed, you need to select the fault recovery item by using the cursor keys. For hard disks using SCSI or RAID, press F6 when starting up. To worry about forgetting the administrator password, when Windows XP starts normally, run Gpedit.msc to enter the policy editor, then select “local computer policy";&&quoquo;computer configuration"/Windows settings/“security settings&rdquo ; /& ldquo; local policy & rdquo; /& ldquo; security options & rdquo;, double-click on the window on the right side of the "recovery console: allow automatic system management level login", right click, select "start" & rdquo; , click the "OK" button to save the settings, enter the Recovery Console without entering a password. (2) & nbsp; failure recovery console & rdquo; application 1 repair damaged multi-boot menu If the multi-operating system menu is lost for some reason, you can enter the "failure recovery console", enter the Bootcfg /scan command, will automatically scan the Install the operating system and display it. After the completion, enter the Bootcfg/rebuild command. Press the Y key when prompted. Enter the missing boot menu item after the “Enter Load Identifier” prompt. Enter the OS Load Option in “ After entering fastdetect and press Enter, you can find the multi-system menu. In addition, you can also add a menu item to the boot menu by entering the Bootcfg/add command. The usage method is basically the same as above. 2 Repair the system boot area When the system boot area is damaged due to some reason and cannot be started, you can enter the fault recovery console. Enter Fixboot from the command line to repair the boot area. 3 recovery system important files There are some important files in the system directly related to whether it can be successfully started. If the Ntldr file is lost, the system will not start up. At this time, you can enter the console and type the command line copy x:\\i386\ tldr* .* c:\\ After you press Enter, you will find that you can enter Windows XP normally after restarting. If you are missing some compressed files, you can also enter expand x:\\i386\\a.ex_ c:\\windows\\ in the console (x stands for CD-ROM drive letter, a.ex_ stands for file to be decompressed, c:\\windows refers to The target folder, which depends on the specific situation, can restore the lost files to the system. 4Enable or disable certain services or drivers This feature is mainly used when the system fails to start due to the installation of some new programs. We may remove the service or program in the Recovery Console to achieve the system's reincarnation. . The specific operations are as follows: Enter the console, enter the Listsvc command and press Enter. All the services and drivers currently in the current system and their status descriptions will appear on the screen. Find the suspicious service or driver that needs to be disabled. Enter the command disable to disable the program or service. After the carriage return, the status of the service and the status after the completion will be displayed on the screen. If you want to hire a program or service, you need to Type Enable to disable the program or service, just press Enter. , select "Safe Mode with Command Prompt", log in as an administrator, enter the %systemroot%\\windows\\system32\ estore directory, find the rstrui file, run the rstrui file directly, follow the prompts.