Microsoft Explrer shuts down imedtly upon booting up.

See if the information below helps to resolve the issue/s you are having with Internet Explorer:

http://support.microsoft.com/default.aspx/kb/936213/?p=1

"How to optimize Internet Explorer"

Configuration settings in Windows Internet Explorer 7 and Windows Internet Explorer 8 may cause one or more of the following issues:

· You experience performance problems in Internet Explorer.

· You receive an error message in Internet Explorer. For example, you receive an "Internet Explorer cannot display the Web page" error message.

· Internet Explorer stops responding.

The above article describes how to optimize or reset Internet Explorer in Windows Vista to resolve these issues.

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http://support.microsoft.com/kb/936215

"How to troubleshoot Internet Explorer issues in Windows Vista and in Windows XP"

This article discusses how to troubleshoot possible issues that you may experience when you use Windows Internet Explorer 7 or Windows Internet Explorer 8 on a computer that is running Windows Vista.

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http://support.microsoft.com/kb/936214/

"How to troubleshoot compatibility problems that affect Internet Explorer 7 in Windows Vista"

This article describes how to troubleshoot software compatibility problems that affect Windows Internet Explorer 7. To help determine which program may be causing the problem, you can take the following steps:

1. Use safe mode with networking

2. Perform a clean boot

3. Use a different user account

4. Scan your computer for viruses and spyware

5. Run Internet Explorer 7 in "No Add-Ons" mode

Hope the above helps.

Cheers.