If this icon is not available, click the Start button in the lower-left corner of Windows and right-click My Computer.. Near the bottom of the window, click the Customize Desktop button.
Trang 1Figure 11-2: Command window
5. Reinstalling TCP/IP may cause problems with programs that monitor your Internet activity, such as software fire-walls If you experience any problems with these programs you should uninstall them, and then reinstall them
Repair the Winsock
Another potential cause of your inability to connect to the Internet is
a winsock file, a component dealing with your Internet connect set-tings, that has been altered or damaged by spyware or other digital threats Fortunately, repairing the winsock is easy to do The appro-priate method of repair depends on whether you have installed a special collection of Windows security patches known as Service Pack 2 Check for it by doing the following:
1. Right-click the My Computer icon on your desktop If this icon is not available, click the Start button in the lower-left corner of Windows and right-click My Computer
If you can’t find the My Computer icon anywhere, do the following:
a Right-click in the empty space on your desktop.
b Select Properties.
c A window opens Click the Desktop tab.
d Near the bottom of the window, click the Customize
Desktop button
e Another window opens On the General tab, beneath
Desktop Icons, place a checkmark next to My Computer
f Click the OK button.
g You are returned to the previous screen Click the
Apply button
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Trang 2System Beneath it, you should see some words identifying your version of Windows as well as any service packs that are installed To repair the winsock, try the fixes in the fol-lowing sections that correspond to the type of service pack you have (if any)
To repair the winsock if you have no Service Packs or have Service Pack 1:
1. Click the Start button in the lower-left corner of Windows
2. Click Run
3. A window opens Type regedit in the blank, and then click
the OK button or press the Enter key
Warning
Be careful when editing the registry Deleting or editing the wrong entries could cause more problems
4. The Windows Registry Editor opens In the left window pane, double-click the HKEY_LOCAL_MACHINE reg-istry key If you can’t find it, do the following:
a In the left window pane of the Registry Editor, scroll
to the top
b If any of the HKEY registry keys are open — as
indi-cated by a minus sign (-) on their left side — close them by clicking that minus sign When a registry key has been properly closed, it will have a plus sign (+) next to it
c Repeat this process for the remaining HKEY registry
keys until the only things visible in the left window pane are the five HKEY keys (see Figure 11-3)
d Double-click the HKEY_LOCAL_MACHINE
reg-istry key
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Trang 3Figure 11-3: Five HKEY registry keys
5. A new column of registry keys appears Double-click System
6. Another column of registry keys appears Double-click CurrentControlSet
7. Double-click Services
8. A long list of registry keys appears Scroll down until you see Winsock (see Figure 11-4), and then right-click it and select Delete
Figure 11-4: Deleting the Winsock registry key
9. You are asked to confirm the deletion Click the Yes button
10. Repeat this procedure to delete the Winsock2 registry key
11. Exit the Registry Editor by clicking the X button in the upper-right corner
12. Shut down your computer and restart it
13. After returning to Windows, click the Start button in the lower-left corner
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Trang 4view, simply double-click the Network Connections icon.
16. In the right window pane, right-click the name of your net-work connection
17. Select Properties
18. A window opens Click the Install button (see Figure 11-5)
Figure 11-5: Network Connection Properties
19. Another window opens Click the Protocol icon, and then click the Add button
20. Under the Network Protocol heading, click Microsoft IPv6 Developer Edition (unless your version of Windows is con-figured differently, in which case you might see the words Microsoft TCP/IP version 6)
21. Click the Have Disk button
22. Another window opens In the box below Copy
Manufacturer’s Files From, type C:\Windows\inf (unless
Windows XP is installed in another location, in which case, replace C: with a different drive letter followed by a colon) See Figure 11-6
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Trang 5Figure 11-6: Specifying a location
23. Click the OK button
24. A new window opens Under the Network Protocol head-ing, click Internet Protocol (TCP/IP), and then click the
OK button
25. A moment later, you are returned to one of the previous windows Click the Close button
26. Shut down your computer and restart it
To repair the winsock if you have Service Pack 2:
1. Click the Start button in the lower-left corner of Windows
2. Click Run
3. A window opens Type cmd in the blank, and then click the
button labeled OK or press the Enter key
4. A command window opens Type netsh winsock reset
(see Figure 11-7), and then press the Enter key This restores your winsock to its original, default configuration
Figure 11-7: Command window
5. Shut down your computer and restart it
6. Repairing the winsock may cause problems with programs that monitor your Internet activity, such as software fire-walls If you experience any problems with these programs you should uninstall them, and then reinstall them
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