Windows 10: Windows start menu and microsoft edge not working after installing third party application

i installed a third party theme "flat_color_w10_iconpack_by_alexgal23-d98fnp4" on windows 10 pro after the restart my microsoft edge dissappeared when you try to click it it shows a message "class not registered", also the windows button and icon are no longer responding.I also, realised it took long to open the control panel and the settings and task bar no longer work at all.

:)

 

Start menu is not working on Windows 10

I have tried till the troubleshooter and got this

"Microsoft.Windows.ShellExperienceHost" and "Microsoft.Windows.Cortana" applications need to be installed correctly.

Now how do install these applications

 

Edge disappeared and start menu not working on Windows 10

Hello Richard,

We need to do further investigation on your concern so that we can isolate the issue regarding Microsoft Edge and Start menu:

• Have you tried to searching in Cortana search to check if Edge can be located?
• Besides powershell, what other troubleshooting steps have you performed?

In the meantime, you can download and run the
Windows apps troubleshooter to isolate the issue on Edge.

We also suggest that you download and run the
Start Menu troubleshooter to fix common Start menu issues.

We will wait for your response.

Regards.

 

Windows 10 start menu button quit working

Hi,

The issue with Start menu may arise due to the following reasons:

• 
  Corruptions in Windows components.
  
• 
  Third party application conflicts.
  
• 
  Corruptions in the accounts.
  

I appreciate if you could answer a few questions to narrow down to the issue.

• What is the make and model of the computer?
• Which is the build presently installed on the device?
• Did you install any third party security application?
• Did you make any changes to the system settings?

As an initial troubleshooting step, I suggest you to refer to the article provided below and check if that helps to resolve the issue.

http://windows.microsoft.com/en-us/windows-10/get-help-windows-start-menu

Hope the information provided helps in resolving the issue related with the Start menu. Please do let us know if you need further assistance. We will be glad to assist you.

Thank you.