Hello Friends !!
Recently my computer started to make a lot of sound, and after few minutes it was shut down. Again I started the computer but the problem remain as such. I opened the CPU cabinet to check what is the problem. I found the CPU fan was the making so much noise because the cream used in the Heat Sink of Processor has almost hardened and I was worried that my CPU will burn up if I don’t do something soon.

A conductor cream is used in between the processor and CPU fan for proper heat conduction. CPU fan can make high sound if heat sink do not work properly.
A friend of mine advised me to use a toothpaste cream instead of the conductor cream as conductor cream was not available that day in the nearby market. I used a thin layer (mind it) of the toothpaste in place of the conductor cream, and restarted the PC. This time my PC started smoothly without any noise. I was amazed !!!!
WOW !! A toothpaste cream can be so useful for computers !!
You can also try this if your CPU fan is making noise, and making your PC shut down. It will help.
Good Luck !!