Help! My internet seems to have disappeared from my Acer ES15 laptop (Windows 10) and I don't know why. I can't use Cortina. If I click on Google Chrome, Mozilla Firefox, etc, nothing happens. Ditto with Acer care centre. When I click on the Microsoft Edge icon, it flashes up for a split second as though it's going to open, but then disappears. Can anyone help? I just want my internet back!