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Computer expert, please answer! !
For a while, my computer was running very slowly, so I found many ways. After repeated attempts, I feel that the following methods are more effective and share them with you!

First, slim down the computer.

Selectively delete the following directories or files (delete all directories without *).

C:\windows\$* (all directories start with $ sign, and patches are installed in reverse, about 70M).

C:\windows\*。 Logs (not big, but too many)

C:\ windows \ PC Health Help Support Center, 30M

(Before deleting, please copy helpctr\binaries\msconfig.exe to the system32 directory. )

C:\windows\ime\chtime traditional input (unnecessary, many input methods support traditional input) 12M.

C:\windows\ime\imejp Japanese input 12M.

C:\windows\ime\imejp98 Japanese input 12M.

C: \ windows \ system32 \ ime \ cintlgnt Cang Xie code 3M.

C: \ Windows \ System32 \ IME \ Tintlgnt Pinyin Input 3M.

C:\windows\help\* help file. If you are not used to seeing help, delete 30M.

C:\windows\temp\* Usually not.

c:\windows\prefetch\*

C: \ Windows \ installer \ *。 Some rubbish left by MSI after installing MSI program (long name directory cannot be deleted! )

C: \ Windows \ Downloaded Installations \ * MSI program left some garbage after installation.

C:\windows\resources\themes\* (It is recommended to keep Classic as the classic theme and Luna. The theme is XP theme 8M, and the ones you don't like are deleted).

C: \ Windows \ Srkhast Search Assistant (a puppy), 8M.

C:\ windows \ m Agent Microsoft Agent 3M

C: \ Windows \ Software Distribution \ Download \ * (temporary storage point for downloading patches) is about 60M.

C:\windows\system32\oobe activation program (we all use activation-free XP, which is unnecessary) 8M.

C:\windows\web\wallpaper\* wallpaper, just leave a nice bliss.bmp, or delete it all. 2M

C: \ program files \ windows nt \ pinball, deleted. Remember to delete the connection 5M from the start menu.

C:\program files\movie maker all deleted, 10M, garbage. Remember to delete the connection from the start menu.

C:\ program file \ messenger

C:\program files\msn gaming zone Microsoft games

C: \ program files \ InstallShield installation information \ * garbage left by the installation program.

C: \ program files \ windows update \ * garbage left by XP upgrade.

Delete the driver.cab file in the driver backup: %windows%\driver cache\i386 directory, usually these files are 76m.

Uninstall uncommon components: modify \%windows%\inf\sysoc.inf with Notepad, use the find/replace function, and enter, hide, (Note: the contents to be replaced are commas and hide, otherwise it will not take effect) and replace them all with spaces. In this way, all the "hiding" is removed. After saving the disk, run "Add-Remove Program", and you will see many more options in "Add/Remove windows Components". Delete games, code watches and other unused things.

Second, shut down unnecessary services.

Many services are useless, and starting them will only waste memory and resources. Affect the startup speed. Closing unimportant services inside can speed up startup and reduce the burden!

Alarm: You are not connected to the LAN, so you don't need to manage the alarm.

Scrapbook: You don't need to look at the clipboard page of the remote scrapbook.

Distributed link tracking client: if ntfs partition is not used and LAN is not connected.

Distributed transaction coordinator to *: There is no need to process multiple databases or file systems at the same time.

**x service: Do not use windows 2000 to send or receive faxes.

Ftp publishing service: Your computer does not act as an ftp server.

Iis Management Service: Your computer is not a www server.

Indexing service: Your computer does not provide remote file indexing and quick access, or it is not connected to the local area network.

Internet connection sharing: You don't want to use windows 2000 as a routing server, so that many people can enjoy an online Internet cafe.

Ipsec Policy Agent: You are not connected to the domain of windows 2000.

Logical Disk Manager Management Service: You will not use disk quotas.

Message Queuing: You are not connected to the domain of windows 2000.

Messenger: You are not connected to the domain of windows 2000, so you don't need to manage notifications.

Network login: You don't want other users on the LAN to log in.

Netmeeting Remote Desktop Sharing: You don't want to use netmeeting to remotely manage your computer.

Network dde: You are not connected to the LAN.

Network dde dsdm: You are not connected to the LAN.

Performance logs and alerts: If you don't want to know what the computer is doing every second.

Qorsvp: You are not using a program that depends on qos.

Remote Access Automatic Connection Manager: When a program tries to read network information, you don't want to automatically connect to the network.

Remote Procedure Call (rpc) Locator: You do not need to manage the RPC name service database.

Routing and Remote Access: Your computer is not a router.

Runas service: You don't need to execute a program as another user under one user.

Simple Mail Transfer Protocol (SMTP): Your computer is not an outgoing mail server.

Smart card: You don't have a smart card reader.

Smart Card Assistant: You don't have an old smart card reader.

Snmp trap service: You are not connected to the domain of windows 2000.

Tcp/ip netbios Assistant Service: Your computer will not be shared by others.

Tcp/ip print server: Don't let your computer become a network print server.

Telnet: I don't want to remotely control the computer to execute console commands.

Uninterruptible power supply: ups is not used or ups does not support bidirectional signal transmission.

Utility Manager: Do not start and configure assistive tools from one window.

Windows management instrumentation: You don't read your system management information.

World Wide Web Publishing Service: Your computer is not a www server.

vices.msc

Third, optimize the startup procedure.

These programs loaded at startup not only slow down the startup speed, but also consume computer resources and memory: open and start running, enter msconfig in the dialog box and click OK to bring up the system configuration utility, click the Start tab, just remove the programs that are not loaded, and the startup time will be shortened by at least 10 second.

Fourth, modify the registry:

Copy the following into a text document and save it in xxx.reg format.

Then double-click and pour it into the registry, and the boot speed will be improved several times.

Windows registry editor version 5.00

[HKEY _ Current _ User \ Control Panel \ Desktop]

" AutoEndTasks"=" 1 "

" HungAppTimeout"=" 100 "

" WaitToKillAppTimeout"="500 "

[HKEY _ LOCAL _ MACHINE \ SYSTEM \ current Control set \ Control]

" WaitToKillServiceTimeout"="500 "

[HKEY _ LOCAL _ MACHINE \ SYSTEM \ current Control set \ Control \ Session Manager \ Memory Management \ prefetch parameters]

" EnablePrefetcher " = dword:00000003

First, open the advanced tab of system properties (right-click My Computer-Properties, or open the system in the control panel, and press the shortcut key win+ pause break), open the settings of startup and recovery area, and remove the two √ in the system startup area. If it is a multi-system user, set aside time to display the operating system list. Click "Edit" to confirm that the additional attribute of the startup item is /fastdetect instead of nodetect. Don't add the /noguiboot attribute for the time being, because guiboot will be used later.

The next step is crucial. Open the hardware tab in the system properties, open the device manager, expand the IDE ATA/ ATAPI controller, double-click to open the auxiliary IDE channel properties, and click the Advanced Settings tab to change the transmission mode of the devices 1 and 2 to DMA. If available, select None as the device type.

Open the registry (Start-Run -regedit), click My Computer to open search in the edit menu, enter AutoEndTasks, and click Find Next. Double-click to open the found results, and change the "Numerical Data" to 1. Then you can find HungAppTimeout and WaitToKillAppTimeout under AutoEndTasks, and set "numerical data" below 2000. By the way, you can also modify the menu delay time here and find MenuShowDelay under AutoEndTasks. This value is in milliseconds, and if you want to cancel the menu delay, you can set it to 0.

After the modification is completed, click the "Edit" menu to open "Find Next" (shortcut key F3) and install all the results found in the previous method.

Now that the acceleration of startup and shutdown has been completed, further speed up the startup, open the settings of system properties-advanced-startup and recovery, open editing in the "System startup" area, and add /noguiboot after fastdetect, so that the scroll bar will not be displayed when starting. You don't need this step if you want to keep the scroll bar displayed.

5. Use optimization software to optimize the registry, or use the installation tool cclean file.

6. In addition, wallpaper, screensavers and some unnecessary fonts will waste computer resources. It is recommended to do some cleaning. Finally, it is suggested to clean the hard disk and defragment it.