In the last two years I have been having a lot of power supply problems in my PC due to which I had it changed once or twice and repaired once and now again since three-four months it's making a lot of noise (sometimes irregular noise). My dealer says it's a normal problem and keeps on happening many times around the year to everybody. Is this true! Why could this be happening?? :wall:It looks like I will have to replace it again now. Which is a good power supply unit in the market nowadays. I am thinking of buying it myself this time if someone can help me with the brand, model, compatibility etc.