Why are some system icons greyed out?

[WPCentral Question]

For a while now all three of those icons have been greyed out and I have not been able to find a solution anywhere on the internet. I tried the text size trick to restore my volume icon and that did work shortly. All three icons are all still greyed out and off. I need help. I upgrade to Windows 10 for free from Windows 8.1 thats about it.