Sooooo you decide to log a call ... Hardware description, OS (and version), software installed, etc etc before we even start to think about it. Bugger that:

Sooooo you decide to log a call ... Hardware description, OS (and version), software installed, etc etc before we even start to think about it. Bugger that: cost your time at say £20 per hour (I'm thinking of a reasonably good techy take home in a reasonably rich economy). Now do a cost/benefit analysis ..... buy a new motherboard, fit it and delete the blog post. Don't forget that the ambient temperature may also correlate with say humidity or some other parameter. Buy a new mobo and delete the post and move on unless you are prepared to really go to town with a decent investigation 8)