I have an P4 2.8 HT processor with Intel 915GAG motherboard. Recently my computer started overheating with processor zone temp crossing 60 C and SYstem Zone 1 temp crossing 50 C. I installed 2 chasis fans on my cabinet . But i havent seen much improvement in the temp. Could the problem be with my processor fan. Is it safe to take out my processor fan and clean it myself. and what is this system zone temperature and what should be there normal values.