But to troubleshoot and resolve the problem, a clear head is imperative. Be systematic and approach the problem logically. The troubleshooting steps below will take a methodical approach to help you figure out why your PC is not booting correctly or not booting at all. Every single problem and solution in this article has happened to somebody at some point. Most of them it takes only a few seconds to check, take the time to do so.
Nothing happens at all Start with the power.
Take the cover off of the case, remove the video card and insert it again properly, then try again. This could indicate a hardware problem. Try to think what happened right before the problem started. If so, it might be faulty or not installed right. Remove it, then try again.