Class Not Registered Error Prevents Device Manager from Opening

I have been running Vista Ultimate for 4-5 months. I just recently started
to receive the pop-up error message 'Class Not Registered' when trying to
open the Vista Device Manager. When I close the panel, nothing else happens
-- i.e., Device Manager doesn't launch. I see from a few other posts (not on
this site) that others have experienced this problem, but no resolution was
provided. Can anyone help?

"TheRogersinUSA" <TheRogersinUSA@discussions.microsoft.com> wrote in message
news:778CC49E-E4A9-40CE-B3F0-4EAB1187AB67@microsoft.com...
> I have been running Vista Ultimate for 4-5 months. I just recently
> started
> to receive the pop-up error message 'Class Not Registered' when trying to
> open the Vista Device Manager. When I close the panel, nothing else
> happens
> -- i.e., Device Manager doesn't launch. I see from a few other posts (not
> on
> this site) that others have experienced this problem, but no resolution
> was
> provided. Can anyone help?
>

Have you tried typing devmgmt.msc in the Start - Search Area and trying to
open from there?

Rob

--
Red meat isn't bad for you....Blue, Green fuzzy meat is bad for you.

Dell Dimension 8300 Desktop
P4 3.0GHz
1GB RAM
Windows Vista Ultimate 32Bit
ATI Radeon 9800 XT
Creative SB Audigy 2

"TheRogersinUSA" <TheRogersinUSA@discussions.microsoft.com> wrote in message
news:778CC49E-E4A9-40CE-B3F0-4EAB1187AB67@microsoft.com...
> I have been running Vista Ultimate for 4-5 months. I just recently
> started
> to receive the pop-up error message 'Class Not Registered' when trying to
> open the Vista Device Manager. When I close the panel, nothing else
> happens
> -- i.e., Device Manager doesn't launch. I see from a few other posts (not
> on
> this site) that others have experienced this problem, but no resolution
> was
> provided. Can anyone help?
>

Have you been using a 3rd party Registry Cleaner? You may of deleted an
important registry key that's preventing you from accessing Device Manager.
If so do you think you may have a back up of the registry before you cleaned
it?

I'm not sure if this will help as it refers to XP:

http://www.kellys-korner-xp.com/regs...gerrestore.reg

Maybe someone could look and see if it would work with Vista. Or maybe
someone knows of the equivalent .reg file for Vista.

Rob

--
Red meat isn't bad for you....Blue, Green fuzzy meat is bad for you.

Dell Dimension 8300 Desktop
P4 3.0GHz
1GB RAM
Windows Vista Ultimate 32Bit
ATI Radeon 9800 XT
Creative SB Audigy 2

No. Running devmgmt.msc in the Start - Search Area results in the same error.

"Rob" wrote:

>
>
> "TheRogersinUSA" <TheRogersinUSA@discussions.microsoft.com> wrote in message
> news:778CC49E-E4A9-40CE-B3F0-4EAB1187AB67@microsoft.com...
> > I have been running Vista Ultimate for 4-5 months. I just recently
> > started
> > to receive the pop-up error message 'Class Not Registered' when trying to
> > open the Vista Device Manager. When I close the panel, nothing else
> > happens
> > -- i.e., Device Manager doesn't launch. I see from a few other posts (not
> > on
> > this site) that others have experienced this problem, but no resolution
> > was
> > provided. Can anyone help?
> >
>
> Have you tried typing devmgmt.msc in the Start - Search Area and trying to
> open from there?
>
> Rob
>
> --
> Red meat isn't bad for you....Blue, Green fuzzy meat is bad for you.
>
> Dell Dimension 8300 Desktop
> P4 3.0GHz
> 1GB RAM
> Windows Vista Ultimate 32Bit
> ATI Radeon 9800 XT
> Creative SB Audigy 2
>
>

Actually. I did just recently run a Registry Cleaner -- the Microsoft
OneCare product from Microsoft's Website. Not sure whether the problem
existed prior to running Microsoft's Registry Cleaner, but it did clean up a
number of items. I'll run it again and see if it fixes the problem.

"Rob" wrote:

>
>
> "TheRogersinUSA" <TheRogersinUSA@discussions.microsoft.com> wrote in message
> news:778CC49E-E4A9-40CE-B3F0-4EAB1187AB67@microsoft.com...
> > I have been running Vista Ultimate for 4-5 months. I just recently
> > started
> > to receive the pop-up error message 'Class Not Registered' when trying to
> > open the Vista Device Manager. When I close the panel, nothing else
> > happens
> > -- i.e., Device Manager doesn't launch. I see from a few other posts (not
> > on
> > this site) that others have experienced this problem, but no resolution
> > was
> > provided. Can anyone help?
> >
>
> Have you been using a 3rd party Registry Cleaner? You may of deleted an
> important registry key that's preventing you from accessing Device Manager.
> If so do you think you may have a back up of the registry before you cleaned
> it?
>
> I'm not sure if this will help as it refers to XP:
>
> http://www.kellys-korner-xp.com/regs...gerrestore.reg
>
> Maybe someone could look and see if it would work with Vista. Or maybe
> someone knows of the equivalent .reg file for Vista.
>
> Rob
>
> --
> Red meat isn't bad for you....Blue, Green fuzzy meat is bad for you.
>
> Dell Dimension 8300 Desktop
> P4 3.0GHz
> 1GB RAM
> Windows Vista Ultimate 32Bit
> ATI Radeon 9800 XT
> Creative SB Audigy 2
>
>