From: Number4 on
http://support.microsoft.com/kb/322756/ explains how to backup and restore
the registry for Vista.

"Number4" wrote:

> I haven't worked with Vista yet so these steps are for XP...
> The first thing you want to do is back up the registry. In the Registry
> Editor on the menu bar go to File | Export. Name the file something you can
> remember, I usually put the date in it to help me and then save it to a
> location easy to get to, like C:\temp\ or something. Now that you have a .reg
> file there, if there are any problems with the registry, just double-click
> the .reg file and it will ask if you want to add it to the registry. Try it
> out before attempting to delete anything.
>
> Now that you have a clean snapshot of your registry that you can reload to
> put it back as it was originally, go in and delete one of the keys. Reboot
> the machine and see if you have any glitches. If yes, reload the saved .reg
> file; if no, delete another key and repeat. This is slow and tedious but if
> you're not comfortable with the registry this is the only way to do it
> yourself.
>
>
>
>
>
> "jakhoo" wrote:
>
> > Hi,
> >
> > I'm not good at this techie stuff. Tried to find .NET Framework (as you
> > suggest) and came up with (some same as yours), but too scared to delete/make
> > changes in the Registry. Can you guide please? OS; Windows Vista SP1:
> > THANKS......
> > HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\clr_optimization_v2.0.50727_32\DisplayName : Microsoft .NET Framework NGEN v2.0.50727_X86
> > HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\clr_optimization_v2.0.50727_32\Description : Microsoft .NET Framework NGEN
> > HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\clr_optimization_v2.0.50727_32\DisplayName : Microsoft .NET Framework NGEN v2.0.50727_X86
> > HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\clr_optimization_v2.0.50727_32\Description : Microsoft .NET Framework NGEN
> > HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\clr_optimization_v2.0.50727_32\DisplayName : Microsoft .NET Framework NGEN v2.0.50727_X86
> > HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\clr_optimization_v2.0.50727_32\Description : Microsoft .NET Framework NGEN
> >
> > ***NOTE**** THIS IS NOT THE COMPLETE LIST (because i can't insert more than
> > 30000 characters)
> >
> > "Number4" wrote:
> >
> > > Did you look in the registry for the .NET file? I had some issues with the
> > > .NET Framework and found it under HKEY_LOCAL_MACHINE | SOFTWARE | Microsoft
> > > | .NETFramework. I had to delete the version in question; in my case it was
> > > v2.0.50727. I deleted that key and was then able to proceed. ***NOTE***
> > > Messing with the registry could cause the system to not work. I'm not saying
> > > this is the way to proceed but it worked for me.
> > >
> > > "IHatethis!@#$" wrote:
> > >
> > > > i tryd that but i cant the .net frame work file
> > > >