[NTLUG:Discuss] get desktop back!

[Jeff]

m m wrote:
> All:
>  
> I installed gnome desktop at beginning. Every thing went good.
> one day, I think I like to try kde, and i add the kde package and remove the gnome package.
> ( all went through the graph interface 'add/remove packages').
>  
> After it was done. I reboot the computer, the kde login window popped up.
> something happens after I enter the root id and password -- keeping saying login incorrect and the login window pops up again and again.... 
> what's wrong with kde?
>  
> The only way I can get in the system is through vnc.
> The vnc display is just like an old grand pa's X console.
>  
> I have tried use the F7 dvd, F7 rescue cd, see if there a way the reinstall the packages. But there is no way to get the point. 
>  
> Can anyone have any idea to get it back?
>  
> Thanks
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>   

What distro are you using?  Have you tried logging in on a command 
line?  If you can, log in as root.  Depending on your distro, you should 
be able to use apt-get or yum to reinstall gnome packages if you want to 
go back to gnome.  KDE shouldn't be using any different login 
credentials - authentication is handled the same regardless...