My conpuert wont run

w995 anthony

Distinguished
Dec 19, 2011
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18,510
can any one help,ive got an acer x3810 and the power goes to the fan,the mouse lights up,and the hard drive working you can hear it and see the green light flashs where you put a cd in,it starts up for 10 to 15 seconds then stops,but ive no blue light on the front of the computer when you start the computer up,and nothing on the screen,some one told me its the mother board, ive just put in a new psu,iam new to useing computers please can some one give me a little help,thanks anthony