Last night my Lenovo laptop froze so I turned it off and turned it back on and now it wont stop flickering?

When I go onto my acount the whole screen keeps flickering on and off and I cant do ANYTHING. All it lets me do is turn it off and turn it back on to the same thing.

Read more: Last night my Lenovo laptop froze so I turned it off and turned it back on and now it wont stop flickering?