Invisible Shutdown Text and Missing Icons in Taskbar when Booting Up

Hello, I'm just new here, I'm just asking for some help for my problem. You see, when I installed a Custom Icon Pack (with installer), after rebooting, my Shutdown Button just became bugged with the text written on the button dissappeared. Plus, my Taskbar icons suddenly dissappeared even though it is shown in the options that it has the "Show Icon and Notifications" option enabled. Please help me with my problem. It's really a hassle to uninstall the icon pack everytime just to get those thing back. Thanks for your help.:):)

Thanks for the reply.
No, I mean, when I uninstalled the icon pack, the problem will occur, so I need to keep the uninstaller to temporarily get rid of the problem.

By the way, in the pictures... I just booted my pc from a recent uninstalled of the pack.

Well, that's another problem. I didn't made a System Restore Point before installing the icon pack. Any more clues on What is this Problem or How to fix this problem?

EDIT: I forgot to say in the first post that the problem started when I installed the Icon Pack. Then when I uninstalled it (because of the problem), the problem still persists.

Layback Bear, the solution you gave didn't work. I tried it and reboot, but the problem still persists. Thanks for your help. Does anyone had/have this problem? Please help.

PS: The reason I don't have a System Backup, because I forgot to do it.

I tried to remove all traces but problem still persists. Does anyone here have more ideas on how to solve this?