Kerry I have had the exact same problem and have taken all the same steps.
Please post a solution if you find one and I will do the same.

Adam

"Kerry" wrote:
[color=blue]
> I have tried uninstalling redownloading several times, computer supplier even
> suggested returning computer to original factory settings and then installing
> still same every time first 'Messenger has stopped working - close program'.
> second
> 'Messenger has closed - data execution Prevention has closed messenger -
> click for help. Third help suggests then takes you through turning off DEP
> for that program. BUT when you try you are informed it cannot be turend off
> for that particular program. --- back to the beginning again.
> "Scott" wrote:
>[color=green]
> > On Tue, 20 Feb 2007 02:17:00 -0800, macca
> > <macca@discussions.microsoft.com> spake thusly:
> >[color=darkred]
> > >Hi i have just downloaded windows live messenger and evertime i login, the
> > >application is closed by windows saying windows messenger has stopped working
> > >
> > >any ideas what i need to do[/color]
> >
> > Where did you download it from?
> >
> > What version is it?
> >
> > I'm running the 8.1 beta on my computer now and it's working quite
> > well.
> >
> > I'd suggest uninstalling it then reinstalling it, but download it
> > again first from here:
> >
> > [url]http://get.live.com/messenger/overview[/url]
> >
> > Click on the "Get it free: button to download.
> >
> > Versions from other places (e.g. Download.com, Tucows, etc) may not be
> > current.
> >
> > --
> > Scott [url]http://angrykeyboarder.com[/url]
> >
> > A: Because it messes up the order in which people normally read text.
> > Q: Why is top-posting such a bad thing?
> > NOTICE: In-Newsgroup (and therefore off-topic) comments on my sig will
> > be cheerfully ignored, so don't waste our time.
> >[/color][/color]