So recently when ever i turn my monitor off and back on it crashes my computer. I cant really think of any reasons why this is happening, i didn't even know something like this could happen. My specs are windows 8.1 64, intel 4670k, im not using a graphics card right now although recently i had been using an R9 290 for a few weeks but i am no longer using it. The error message i get as soon as the monitor turns back on is "your PC ran into a problem and needs to restart. We're just collecting info, and then we'll restart for you" then i get the error code SYSTEM_SERVICE_EXCEPTION (igdkmd64.sys). any ideas how i can fix this weird problem?