The computers need to be updated and more in these times, go to Control Panel and Windows update and give it to check for updates and let him, can take several or many hours, depending on everything that has come down, so it seems, and as sometimes suffer cuts, it may be that he was dropping an update and has been left half, do what I said and leave, when you go out and see that no longer looks more and show you a screen with "things" Give update and just take care of it.