Graphics problem

After about 5min of running Zwift pc is shutting completly down. Maybe graphic card is damaged but um not sure. Card ATI Radeon 6000 series 1 GB, Ram 8 Gb.

Simmilar porblem on Sony Vaio VPCEB1S1E. I open Zwift and when Zwift home window should show with menu, tracks, etc… there is nothing on the screen. Just half blue, half white window. Graphic card AMD Mobility Radeon HD 5000 Series

met to. cannot turn of de inside videocard in my BIOS system. i’ve got the radeon HD5000 series. I think my HP is running on the intel HD Graphics videocard. Someone a answer