I recently put a new motherboard and processor into my computer, and now windows won't start up. This has happened to me once before when I installed a new graphics card a few months ago. I have tried many ways of fixing it and nothing works. I think it is the hard drive that is the problem, like it was last time. I thought installing Windows 10 with the DVD would work. But it won't let me install it since Windows 7 won't load up. Is there any way that would 100% work, because I have tried everything that I have found online and its still not working. Thank you.