text: first change the power supply and fix the power code tightly in power supply and socket.\n\nsecond fix the processor fan.. (its very important)\nit should be very tightly fixed.. and there should be no sound in that fan\n\nthird fix all cables tightly to board. (including hard disk cables, cd rom cables)\n\nforth Change the position of RAM \n(it may be not working properly)\n\nur system is new so it will be in warranty...\nchange it or fix this problem as soon as possible