I having a severe trouble with my p4 2.7 computer, problem is while I play the video its works but getting interruption that is I am getting stills, i checked the cd, vga, ram, even I formatted my pc but the problem is the same, I changed the processor also my motherboard is D845GEBV2/D845PESV, ram of 513 mb DDr, what I do plz help me . there is lot of dust in my computer, i checked all the cd that has video files, and in all most all application but the problem is happeining. What I do ?