I need to reformat my pc and reinstall my OS because i just changed mobo and processor from amd to intel, and in the instructions i have to put my OS installer in, then restart my pc so that it boots up the installer again, problem is, it seems as though my disk reader isn't reading my installer, before I restart my pc i check my computer and my installer isnt on there, when I restart my pc, it just restarts the normal way :/ help me please