If the balloon keep popping up and you have already knew the tips they are trying to communicated, try this instead.
1. Start regedit.exe.
2. Then Go to > HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
3. Create a new DWORD value, named it EnableBalloonTips.
4. Set decimal value of 0 (zero)
5. Click OK
6. You can close the regedit now.
Hopefully this work for you.