I have the above laptop running a Petium 2.2. Every time I try to run McAfee it turns off. I changed to Norton and it does the same, even if running speed disc. I've tried all the downloads and updates for a virus but think it may be overheating. Could this be because of the high processor load of AV software? any ideas? Do the fan bases actually help? I had considered upgrading the processor for a mobile version. Might this help?