1. Start > Run > Notepad.

2. Paste the following:

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\TrayNotify]
"BalloonTip"=dword:0000000a

3. Call it increase.reg

4. Double click it, it will ask you if you want to add the information, click yes.