Hello! My name is Renzo and welcome to Microsoft Community.
I'm sorry to hear that you are experiencing this issue and I'll be happy to help you out.
- Check Taskbar Settings
1.1Right-click on the taskbar and select Taskbar settings.
1.2 Scroll down to Taskbar behaviors.
1.3 Make sure the option for Task view and Widgets are enabled
- Restart Windows Explorer
2.1 Right-click the Start button and select Task Manager.
2.2 Find Windows Explorer under the Processes tab.
2.3 Right-click on Windows Explorer and choose Restart.
- Update Graphics Drivers
3.1. Press Windows Key + X then click on Device Manager
3.2. On View Tab, click Show Hidden Devices
3.3. Click the drop down for the Display Adapter
3.4. Find the correct driver > Right click then "Update Driver"
3.5. Click on "Search Automatically for drivers"
3.6. Restart your computer and test if you have the same issue.
- Disable & Re-enable Taskbar Previews using registry
Warning: Editing the registry can cause problems if done incorrectly, so proceed with caution. It's a good idea to back up the registry first. Here's the link for the steps to back up the registry: https://support.microsoft.com/en-us/topic/how-t...
4.1 Press Win + R, type regedit, and hit Enter.
4.2 Navigate to the following key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
4.3 Look for the value "TaskbarGlomLevel". If it's there, delete it.
4.4 Restart your PC and see if the issue resolves.
I hope the above steps helped you. In case of additional questions, reach out back to me, and I will be happy to help and try my best to resolve your issue. Thank you.