Broken Notification Tray Icons
Yeah, I hate this one too. Where that network thing is blank, or battery, or you just open that tray and its empty?

Anyways, yeah do this thing.
- Regedit. Win+R regedit, search, however you want to accomplish that part
- HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify
- Blow out IconStreams and PastIconStreams
- Either kill explorer.exe and restart it (Task Manager is your friend, you could do whatever method you want) or just reboot if you're lazy and don't care.
- Profit?