Blue or pink stripes appears all over the screen, can't do anything but restart with the button.

I was watching Netflix and all of a sudden, blue stripes appeared in my screen. Then my page seemed to "split" in two and then come back to normal and then there were pink stripes all over the screen and I couldn't see anything else but stripes. I had to restart with the button. It restart correctly, I have been able to watch Netflix again but only on Chrome because on safari it would happen again everytime. Then, iPhoto opened and here we are again, stripes and image "moving", can't help but wait... Then the screen became all white and nothing. I tried to restart it again with the button, but it didn't even made it to the apple interface, juste the sound and then white screen. What is going on, Please? I really need my computer for work this isn't fun!

After all this, you are at a white screen at startup and that is as far as it goes? What operating system are you using?http://www.macworld.com/article/2018853/when-good-macs-go-bad-steps-to-take-when -your-mac-wont- Also try this. https://support.apple.com/en-us/HT201295

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