Hi, good day! I'm Jerico T., I understand that you're having some issues right now, I'll do my best to help you with your concern.
When did the issue started? Are there any recent changes on your computer prior to the issue? Please try to press CTRL + SHIFT + ESC to open task manager, under Process tab, look for Windows Explorer then right-click on it and select Restart. Check if the start menu and the apps that are on taskbar functions well now.
If the issue still persists, press and hold your power button for 5 seconds or until it shuts down then wait for about 10 seconds before turning it back on. Check if the issue still persists.
Will wait for your response.
Regards,
Jerico T.