I am getting VIDEO_TDR_FAILURE (atikmpag.sys) in my HP ProBook 4540s with Windows 8. Tried updating AMD Graphics card driver but it doesn't helped. I tried disabling the AMD video adapter from the Device Manager, it helped me to boot my Laptop but I couldn't change screen brightness and I could't project my screen to a second screen which is absolutely necessary for my job. Can someone please help me. Thank you.