you can use RMClock or Notebook Hardware control to view the CPU temperatures, load, clock, ... I use RMClock, because I'm used to it. Sadly it does not get updated any longer. When on battery, in tablet mode and I read a PDF or do only light things, so the CPU is idle most of the time, the CPU temperature is around 41 C most of the time and the fan is completely off. At the moment it is connected to the AC adapter, connected to a WUXGA display, which stresses the IGP a bit more and sits on the port replicator in tablet mode I have a CPU temperature, while idling, of about 45 C. I have posted a chart in a different thread with my CPU temperatures: http://forum.tabletpcreview.com/showthread.php?t=22956 The high noise and maybe CPU temperatures can get caused through CPU intensive background processes. Run Process Explorer from Sysinternals (you can download it from the microsoft site) and take a look at the CPU load and "I/O delta other bytes". There you can see what process stresses the CPU. I just don't know what you mean with dynamic background. What happens if you turn it off?