PC buzzes and does not boot:

Computers have become a part of our life. Personal computing involves usage of desktop PC for our day to day use. We seldom maintain our PC inspite of its usage. In places like US of A where the temperature is low and the climate cold, not much maintenance is needed. Elsewhere the temperatures are high and there is dust to cope with. One fine morning when I powered on the computer it started emitting a buzz but didn't go further. The power light and the CPU light in the front panel are glowing and the fan on the power supply (SMPS) is running but still nothing shows up. This is a problem that many PC users face over a period of time. This occurs due to the dust accumulation on the mother board and the RAM slot. This is a very easy problem that can be handled ourselves without the need for a computer technician. First switch of the power and remove the power cord from the mains. Use the star screwdriver and open the side panels of the CPU. The circuit board that we see is called the mother board. On this you can find written in white RAM and one or two RAM's plugged perpendicular to the motherboard. These RAM's are clamped on the edges. Just lift the clamps and the RAM's come out themselves.Take a camel hair brush and a soft cloth and clean these RAM's as well as the motherboard delicately. Never ever use a high powered vacuum cleaner to clean the mother board or the RAM as they tend to damage the circuits. Once you are through with the cleaning process insert the RAM's back in the RAM slot and if the RAM's fit snugly into the RAM slot the clamps automatically lock up the RAM with the mother board. Close the side panels, insert the power cord and run the power supply. Start the CPU and your PC is up and running. To prevent recurrence of such a problem repeat this hardware troubleshooting technique atleast once a month.