After the operating system is reinstalled, due to security settings and patches not being installed in time, it is most likely to cause a virus intrusion, so some necessary supplementary measures are very critical. The first big thing: don't rush to access the network. After installing Windows, don't immediately connect the server to the network, because the server has not been patched, there are various vulnerabilities, and it is very easy to get infected and invaded. At this point, add the shock wave and shock wave patch and restart and connect to the Internet. The second big thing: to patch the system /install anti-virus software Needless to say, the shock wave and shock wave virus patch must be labeled, if you install Windows XP SP2, you do not need to install it. After installing the system, be sure to install anti-virus software and update it to the latest version. The third big thing: Turn off System Restore System Restore is a feature in Windows ME and Windows XP, Windows 2003 that allows us to restore the system to a certain time state, thus preventing us from reinstalling the operating system. However, some people found that after the system restore, the other D and E disks were restored to the previous state. As a result, the files saved in it were gone, causing serious damage! System Restore defaults to all partitions on the hard disk, so once the system restore operation is performed, the data of all partitions will be restored. Therefore, we must press the Win+Break button, then click the “System Restore” tab, uncheck the “Resume System Restore on all drives” option, then select the D drive and click the “Settings” button. In the window that opens, select the option to "close the system restore on this drive". Restore the systems on the other disks in turn. In this way, once the system is unstable, you can use the system restore tool to restore the system on the C drive, but at the same time the files on other disks will not be a problem. The fourth big thing: the password for the Administrator may be used by someone who is using the universal Ghost version downloaded online to install the system, or it may be using the Windows XP unattended installation CD-ROM installation system, using these methods to install the pole It may not let you specify the Administrator password, or the Administrator password is the default 123456 or simply empty. Such a password is quite dangerous, so after installing the system, please right click on "My Computer", select "Manage", and then select the "Computer Management (Local) & Rarr; System Tools on the left side. → local users and groups → users & rdquo;, select the Administrator in the right window, right-click, select “ set password & rdquo;. Click the “Continue” button in the open window to set the password for the Administrator in the open window. In addition, select “new user”, set the username and password, double-click the new user, click the “subordinate to” tab, select all the groups (if any), click “delete> ; button. Click the “Add” button, and then click the “Advanced” button in the open window, then click the “Find Now” button to find the PowerUser or User group, click “OK” Times, add this user to the PowerUser or User group. Logging out the current user and logging in as a new user can reveal that the system is much faster. The fifth big thing: After closing the default shared Windows installation, some hidden shares will be created, which are mainly used when the administrator manages the system when logging in remotely, but for individual users, this is rarely used, and it is not very safe. Therefore, we need to cut off this share: first create a new disshare.bat file under d:, write the following statement: @echo offnet share C$/delnet share d$/delnetshare ipc$/delnet share admin$ /Del next? Copy d:disshare.bat to the C:WINDOWSSystem32GroupPolicyUserScriptsLogon folder. Then press Win+R, enter gpedit.msc, in the open window, expand “User Configuration →Windows Settings →Script (Login/Logout)” folder, double click in the right pane “Login&rdquo ; item, in the pop-up window, click the "Add" command to select the disshare.bat file in the C:WINDOWSSystem32GroupPolicyUserScriptsLogon folder. After completing the above settings, restart the system, you can automatically cut off the default shared channel of Windows XP, if you have more hard drives, please add them under net share d$/del, such as net share e$/del, net share f$/del and so on. The sixth big thing: enable DMA transfer mode After enabling DMA mode, computer peripherals (mainly hard disks) can exchange data directly with the memory, which can speed up the hard disk read and write speed and increase the data transfer rate: Open “Device Manager&rdquo ;, where "IDE ATA/ATAPI Controller" has "The main IDE channel" and "Secondary IDE channel", double click, click "“Advanced Settings", the dialog will be listed Currently, the transmission mode of the device connected to the IDE interface, click the list button to set the "transfer mode" to "ld"; DMA (if available) & rdquo;. Restart your computer to take effect. The 7th big thing: enabling advanced power management Sometimes installing Windows XP will find that the advanced power control in the BIOS power is not turned on. After installing Windows XP, the power will not be automatically disconnected when Windows is turned off. At this time, many people chose to re-open the advanced power control in the BIOS and reinstall Windows XP. In fact, you don't need such trouble. As long as you confirm that you have turned on the advanced power control option in the BIOS and select ACPI Pc, you must not choose the wrong one. Otherwise, you may not be able to enter Windows after restarting, and restart the computer. The computer may search again. And automatically re-install the computer's hardware, then you can support advanced power control. The 8th big thing: cancel the compressed folder support Click Start → Run, type "regsvr32 /u zipfldr.dll", press Enter, the prompt window "ldll; zipfldr.dll Dll UnrgisterServer success" can cancel Windows XP Support for compressed folders. In addition, typing regsvr32 shdocvw.dll can cancel the association between “images and faxes'; The 9th big thing: cancel & ldquo; lack of disk space & rdquo; notice that when the disk drive capacity is less than 200MB, Windows XP will issue a "lack of disk space" notification, very annoying. You can open the "Registry Editor", navigate to the HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPolicies Explorer, right click on "Explorer", select “New”→“DWORD value" on the right-click menu to name this value For “NoLowDiskSpaceChecks”, double-click the value to set the “Value Data" to “1”. The 10th big thing: enable verification code After installing SP2, most users find that they can't display the verification code picture (shown as a red cross) in some places where they need to fill in the verification code. This is a very serious bug. The solution is: Run the “Regedit” command to open the registry editor, and then navigate to “[HKEY_ LOCAL_MACHINESOFTWAREMicrosoft Internet Explorer Security]”, and create a new REG_DWORD value named “BlockXBM” in the right side of the window to set its value. For “0” (hexadecimal value).