Hi all, I have a problem with one of the Dell systems in my lab. When powered on it works fine for a short time and then it just hangs. I noticed that the system fan does not work. Could this be a cause of the problem ? I also find that once the system hangs the power button will not let me turn the system off and I have to 'pull the plug'. The details are as follows: Dell precision 610C,P-III - 733 Mhz,RAM - 256 MB Thanks in advance Venkatesh Hemmige Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://freepctech.com/pcbuild.shtml