Windows system fault quick resolution skills

Windows XP is an operating system that is commonly used at present, and its stability and ease of use are unquestionable. 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? Here I give You have a better answer: First, if your computer can enter the Windows environment under 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 each time the system is booted. This can greatly reduce the startup speed. Generally, it is not used, and the usage is 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.