So, tell me, has your computer ever made a noise that sounds like one of your fans is dying? I'm sure you would know if it has, because it can be pretty loud and it usually just sounds awful! Well, either way, I'm willing to bet that your fan really isn't the culprit here. Nope, it could be your power supply instead. If you have a noisy fan, you smell something burning or you see smoke or flames shooting out the back of your computer, you may very well have a problem with your power supply. And I assure you, that's a whole lot worse than a dead fan if you don't catch it right away. Keep reading for more on this!
There are many different things that could cause your power supply to go bad. For instance, the fan that runs next to your power supply could get clogged up with dust and dirt and start to run much slower or the fan's bearings could start to wear off. When those things happen, your power supply is at risk of overheating and it will eventually fail. Or, it could have nothing to do with your fan. Perhaps the power supply itself was faulty from the get go and it only took a matter of time before it failed completely.
Even more so, if you're having trouble with your computer shutting down and restarting itself at random times, that could be another indicator that your power supply is going bad. And since your motherboard, CPU, disk drives, etc. all work off of the power supply, it's not a good idea to take a chance on it getting any better. If you do, you'll just have more trouble down the road. Don't worry though, replacing a power supply is rather easy to do and it's fairly cost friendly. So, if your computer is experiencing any of the symptoms I mentioned above, you'll want to check into getting a new power supply. It's a small price to pay for the safety of your computer!
~ Erin worldstart.com