hd graphics problem

Hi guys, I have successfully installed High Sierra public beta 2 on my system. However, I am facing a few issues related to Intel HD Graphics 630. - Graphics acceleration not working (checked using MacX Video Converter Pro). - Artefacts on the top right of the screen. It happens after login...

So i last week my friend install on my laptop mac os 10.9 i dont know how but he did it but the graphics are blured like an a old tv i cant ask him how to fix that because i just move out from my home country and now i live in germany plus he is always somewere and doing something so i dig up on...