Greetings. This afternoon I had my PC open for some cleaning but after i cleaned it and put it back in place, i noticed some metal noises. I thought it would go away, but 30 minutes later it was worrying. I went to shut down my PC and took out my CPU cooler. I saw black scratchmarks on the heatsink, just below the fan blades. This point it's confirmed that that is the problem. It was not other fan / heatsinks. My PC (my first build) was built around 2 months or 3 months ago and it was a budget build, so I did not get another cpu cooler, I just used the Intel stock cooler. Is there a way for me to fix this problem or do I need to buy a new CPU cooler? Please help on this situation!