I run Windows 7 Ultimate (32), on a Dell Latitude E6500.
After a while the CPU usage suddenly raises to 100% and only reset will help. Taskmanager does not show any program with a high CPU usage (only taskmanager itself).
- I disabled all non-windows services, without effect.
- I disabled Avast Free without effect.
The strange thing is that I have this problem frequently, but only when I am connected to the internet with the ethernet cable at work. At home, with a wireless LAN, I never have this problem.
I use either Firefox of IE, but that does not make any difference. Does anybody have a clue and/or a way to identify the cause of this?