Windows 10: icons and files disappeared after a upgrade

After my system updated all except 2 icons on my taskbar disappeared-phone & mail. When I tried to access them from the start menu, it would underline any site I clicked on but never went to the site. When I clicked on the small square it would fade, but never go to the site. Phone will not synch with PC. Phone says it connected bur PC not acknowledge it. I went to setting and clicked on phone/PC, it shows my phone is in the system

:)

 

Icons disappeared and theme changed.

Hi Roland,

Corrupted system files may be one of the possible causes why the icons on your desktop disappeared. To assist you better, kindly answer the following questions:

• Have you made any recent changes prior to this issue?
• Which build and version of Windows 10 are you using?
• Have you tried creating a new user profile and check if the problem is in the current profile or also with the new profile?

Meanwhile, I suggest that you follow the steps shared by Meliton Dec on this
thread.
The given troubleshooting steps will help repair or reset not only missing apps but also lost icon.

Additionally, You can reset the Icon Cache. Kindly follow the steps provided below:

• Open File Explorer and navigate to the following folder:
  
  C:\Users\%username%\AppData\Local\Microsoft\Windows\Explorer
• In the Explorer folder, you will see a lot of files with the
  iconcache name. Delete all of them.

Once you have deleted all the iconcache files, a folder names IconCacheToDelete
will appear. Simply restart your PC and this folder will disappear.

In the event that you are unable to delete some of the files, see the steps below:

• Open elevated Command Prompt. (Win+X > Command Prompt (Admin))
• Type the following command, and then press Enter:
  
  cd /d %userprofile%\AppData\Local\Microsoft\Windows\Explorer attrib –h iconcache_*.db del iconcache_*.db start explorer

If the issue still persists, I recommend you try the suggestion provided by
kpeW9 on this thread or the steps shared by
Guru Khan G on this thread
to troubleshoot your concern. This will also help you scan for corruption and restore corrupted files/Windows corruptions error.

Keep us posted if you need additional help.

 

Tray icon disappears

I've been experiencing since the installation of Windows XP SP2 on multiple machines with the ATITool Tray Icon disappearing upon load at system startup. Sometimes it's there, sometimes it's not. Enabling or Disabling the "Hide Inactive (tray) Icons" WinXP menu option doesn't have any effect. The only way to open ATITool after it has loaded is to go through the start menu to open it again. I have "minimize on close" selected in ATITool. When closing ATITool, you see it make the motions of minimizing to the tray area but no icon is displayed. Any ideas?

 

Two bugs in GPU-Z - icon and version number

I ran into the very same issue with the latest GPU-Z version at Win 10 x64 - I rename the desktop shortcut and after some time I see blank icon for it, and reinstall-rename solution also won't survive restart. The solution I came up with was to extract the icon from GPU-Z and use it instead. This is yet to disappear after multiple restarts.