Balloon tips can sometimes be boring especially when you know what is going to be displayed. Let me tell you how to disable these tips.
1. Navigate through Start->Run->regedit to open Registry Editor.
2. Once again navigate to
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
You will find the following keys in the right panel corresponding to the above location
EnableBalloonTips
StartButtonBalloonTip
FolderContentsInfoTip
3. Change the value of the above keys to "00000000" (without quotes).
4. Similar keys can also be found at
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Change their values also to "00000000" (without quotes, again).
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"EnableBalloonTips"=dword:00000000
"StartButtonBalloonTip"=dword:00000000
"FolderContentsInfoTip"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"EnableBalloonTips"=dword:00000000
"StartButtonBalloonTip"=dword:00000000
"FolderContentsInfoTip"=dword:00000000