I have a biostar tforce 4 u mother board. other night the computer shut off. today i got the dust out of it. was not much. i do this every 2 months. now the computer has no beep codes and dose not come on. I took out the video card not beep. too out the memory no beep. the computer turns on then turns off. any idea what is the problem? i have search bur cant seem to find any thing on it.