Hi, i got my computer a little over 2 months ago, and today it randomly said my pc has run into an issue, restarted, updated and eventually let me in to my computer. I checked dxdiag and it said that my graphics card and everything that has to do with it is n/a. I think its using my integrated graphics right now, and its not detecting my graphics card. Its a desktop, and the graphics card is an Nvidia GTX 750. Please help?