Something is definitely not right. I would HIGHLY advise that you not operate the computer again without first figuring out what is wrong. It is very possible and even likely that if there were a problem with the PSU that you can destroy system components. It is very rare that I suggest this, but if you aren't very educated and comfortable in your ability in diagnosing hardware issues, I would take your computer to a repair shop. There they have the proper equipment and knowledge to accurately diagnose the problem and offer you the solution to fix this problem. Further operating your computer in it's current condition can cause even more damage to occur. I'm not saying that this is a definite, but it is only responsible to let you know that the risk does exist.