There are scripts to turn them off, but they disable all balloon tips.
Try these and see if it is enough.
You can turn the ones for Updates off in msconfig and then check for Updates manually.
Start/Run and type in
Keep the page open then go to one of the links below. They will tell you what all the entries are and whether you can disable them or not. They will also identify any malware. Disable everything which is not needed to run at start up
Read the Key at top of page. Use the Search box to check all your entries
When you reboot you will get a message saying you have started in "Selective Startup" Click "Don`t show this message again" then OK
For the network connection,
Go to your network connection
there is an option to show/not to show this icon at the bottom
Unused icons on desktop
It`s the wizard telling you that
Right click Desktop/Properties/Desktop/Customise
Uncheck "Run Desktop Wizard every 60 days"