(Note: I have been updating from Windows 7 to Windows 10). I have installed Windows 10 on a laptop and two PC’s All went well but today (3 days later) my main PC when switch this morning on gave me the following. (Fig1) System Thread Exception Not Handled (igdkmd64.sys) I looked at all the options offered in Troubleshoot > Advanced options, but none of the simple things helped. The only thing I did before closing down yesterday was I deleted three unwanted icons from my desktop that I did not want. I managed to get into safe mode and reinstall them from the bin, the problem still remains. So that was not the problem. I have checked Troubleshoot: Reset this PC or Advance options. Can anyone give me some advice. I really done want to do anything that will delete any of my older programs that do work now, but would not on a clean installed Windows 10 only PC.