Windows 10 Start Button and Search Button/Box do not work

[Lluis_Set]

Hello,

My new HP Probook 450 G6 does not open the Windows start button menu, nor the Search button (cortana text box). It occurs most of times but not always. I have to press ctrl+alt+del to be able to restart/turn off the laptop.

Anyone can help me to solve it?

Besides, I have installed Office 365 from my company using my company email address but the email address from my laptop is a gmail. Word and Excel show on the top a warning to set/change my account but when I press it, it does open a black-blank window where supposely I have to change the account. I have to close it and the warning continues appearing.

Any help?

Many thanks

Lluís

[IT_WinSec]

Hello @Lluis_Set 

Thank you for posting in the HP Support Community.

• These articles are very detailed and they describe all steps needed to fix the Windows 10 Start button issues:

>> https://www.techadvisor.co.uk/how-to/windows/fix-start-menu-3623893/

>> https://home.bt.com/tech-gadgets/computing/windows-10/has-your-windows-10-start-menu-stopped-working...

Make sure you have enough time, read the articles and follow them step by step.

With regards to your Office365 issue, please reach to your company for support for the account.