Hi,
First...
With the warning that a reset will delete autocomplete data, such as
passwords and you will have to reinstall browser add-ons, work through this
article:
936213- How to optimize or reset Internet Explorer 7:
http://support.microsoft.com/kb/936213/en-us

Then...
936215- How to troubleshoot Internet Explorer 7 issues in Windows Vista:
http://support.microsoft.com/kb/936215

More...
[Guided help] Internet Explorer stops responding, stops working, or
restarts: http://support.microsoft.com/gp/pc_ie_intro
- - -
Or, this may be a malware problem- adware, spyware, hijacker, trojan, etc.
See these sites for help:
The Parasite Fight http://www.aumha.org/a/quickfix.htm
Dealing with Unwanted Spyware and Parasites:
http://mvps.org/winhelp2002/unwanted.htm
Malware Removal and Prevention Overview - CastleCopsWiki:
http://wiki.castlecops.com/Malware_R...tion:_Overview
Bugs, Glitches & Stuffups: http://www.mvps.org/inetexplorer/Darnit.html
Removing Malware:
http://www.elephantboycomputers.com/...moving_Malware
827315- Unexplained computer behavior may be caused by deceptive software:
http://support.microsoft.com/default.aspx?scid=827315

Hope this helps,
Don
[MS MVP- IE]

"V. O." <V. O.@discussions.microsoft.com> wrote in message
news:7A0D1043-1DD7-480D-B8ED-8E7B19BEB450@microsoft.com...
> IE 7 crash everytime that I try to run it now and I dont know the reason.
It
> always worked perfectly until today.
> How to solve this problem?