Link not open in Internet explorer 8 and 9

If you are facing a problem with IE9 or IE8, that when you open any site in internet explorer, it opens but if you click on any link of any site window opens but with blank, is because IE8 and IE9 on Vista and Windows 7 has a new security restriction that is turned on by default for ALL zones on the security tab.

To solve the problem:

• Go to Internet Options - Security Tab - Internet - click on the "Custom" button
• Scroll down to the Miscellaneous section
• Enable the option "Allow script-initiated windows without size or position constraints"
• Enable the option "Allow websites to open windows without address or status bar"

There is another possibility, maybe you have DCOM settings, to solve this problem, follow the next steps:

• Run command
• Open "DCOMCNFG" to open up the Component services
• Expand "Component services and computers" 
• Right hand click on "properties"
• Click on "Default Properties"
• Ensure that Default Authentication Level is "Connect"
• Ensure that Default Impersonation Level is "Identify"

If the options mentioned did not solve your problem there is another possible cause, the (Default) value setting in one or more of registry keys points to an incorrect location for the Urlmon.dll file.
To solve the problem follow the next steps:

• Click Start, and then click Run
• Type regsvr32 urlmon.dll, and then click OK
• When you receive the "DllRegisterServer in urlmon.dll succeeded" message, click OK
• Repeat the process for the next files:
• Shdocvw.dll
  Actxprxy.dll
  Oleaut32.dll
  Mshtml.dll
  Browseui.dll
  Shell32.dll
• Now all you have to do is restart your machine

How to show in word Heading4 in the table of contents

By default, Word includes only the top three levels in a table of contents.

To see more headings, you can manually edit the TOC field code.

1. Press Alt+F9 to display field codes. You should see something similar to this: { TOC \o "1-3" \h } on the table of contents
2. Type 4 instead of 3 
3. Press Alt+F9 to hide the field codes 
4. Press F9 to update the TOC