The issue (pink screen) you are describing sounds like a hardware issue with the laptop. Have you contacted the place of purchase or ACER for support? They would need to be contacted to resolve hardware related issues. You mentioned in your post that you were concerned it could be overheating. Have you used compressed air to blow any dust accumulation out of the CPU cooling fan that would inhibit cooling?
Also, you mentioned in your May posts that you could not get the graphics driver to install. Because ACER has customized the Intel HD Graphics drivers specifically for your system I would strongly recommend using the drivers supplied by ACER at the following link: ACER Driver Support
In your May post you also asked if it is possible to upgrade the graphics of your laptop. Because your laptop has integrated graphics and part of the CPU, the only way to upgrade the graphics would be to purchase a new laptop that has the level of graphics capability that you desire.