Does this behavior persist if you start IE7 in No Add-ons mode? To start
IE7 in No Add-ons mode:
1. Right-click on the blue IE desktop icon and select Start without Add-ons;
2. Start > (All) Programs > Accessories > System Tools > Internet Explorer
(No add-ons).
More:
Troubleshooting and Internet Explorer’s (No Add-ons) Mode:
http://blogs.msdn.com/ie/archive/2006/07/25/678113.aspx
Does the problem persist if you Reset IE7 Settings (RIES)?
http://support.microsoft.com/kb/923737 <= Read before using!

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~Robear Dyer (PA Bear)
MS MVP-Windows (IE, OE, Security, Shell/User)
AumHa VSOP & Admin; DTS-L.org
> Why is IE7 closing if I click on the back button or any highlighted
> boxes?
> I am using Windows Vista Home Premium that came pre-installed on new
> laptop. I also get the message that Explorer needs to close now when I
> want
> it to open. There are no add ons being used.
mtnmama - 23 Jun 2007 03:06 GMT
I do not have any add ons.
> Does this behavior persist if you start IE7 in No Add-ons mode? To start
> IE7 in No Add-ons mode:
[quoted text clipped - 17 lines]
> > want
> > it to open. There are no add ons being used.
Peter Foldes - 23 Jun 2007 05:16 GMT
Have you checked ?? Go to IE\Properties\Programs and select Manage Add-ons. What do you have in there

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Peter
Please Reply to Newsgroup for the benefit of others
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>I do not have any add ons.
>
[quoted text clipped - 19 lines]
>> > want
>> > it to open. There are no add ons being used.
PA Bear - 23 Jun 2007 16:27 GMT
I didn't ask if you had any Add-ons.

Signature
~Robear Dyer (PA Bear)
MS MVP-Windows (IE, OE, Security, Shell/User)
AumHa VSOP & Admin; DTS-L.org
> I do not have any add ons.
>
[quoted text clipped - 26 lines]
>>> want
>>> it to open. There are no add ons being used.