Hii ,
Open the command prompt (admin) and run the commands: sfc /scannow and dism /online /cleanup-image /restorehealth, wait for the process to finish and restart the computer.
Then perform a clean boot and if you want to uninstall applications that you do not use.
Open Task Manager > Seach on Windows Explorer > Right-click on Mouse select Restart.
If you are using the "hide taskbar" function, please let me know, as it doesn't appear when that option is enabled.
Give feedback if the information was useful or not.
Thanks