Hi MagicAndre, thanks for replying. I search for RPEnabled in the registry and I have 4 keys in all. They are located in the following paths: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer HKEY_USERS\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Explorer The values were all set to 1. I changed all of them to 2 as you said, restarted my computer, and I couldn't have the TM I wanted. I also lost the ribbon and the automatic in Window color and appearance, which I can't stand at all! I've already changed all the values to 1 again. It seems to me that Win 8 doesn't allow users to change anything in the registry! It's OK, however. I don't have the new looking Task Manager but I still have some other features such as the explorer ribbon, auto color theme to match the wallpapers, and new copy/move/delete dialogs... (Hey, I like the automatic color for themes so much! When I first knew about it, I kept changing the desktop wallpaper again and again just to see how it tint the theme over and over!) As for the problem with Firefox, I hope someone who is using it on Win 8 can tell me whether they have the same problem or not. I will try installing another old version to see what will happen. Thank you again. Edit: removing the image