I'm currently using a homebuilt PC with the following spec:
Windows 7 64bit Home Premium running on a 128GB SSD
All of a sudden yesterday when running Google Chrome, i noticed some random cpu usage spikes on all four cores. Even when idle the system will experience intermittent spikes. The big change ive noticed is when i start up the computer and start up chrome. When starting up chrome, the cores will spike randomly and show 60% usage, then after a few seconds they drop. It happens intermittendly with other programs normally upon their startup. For example starting up Skype c0 peaks at 41%
I've ran the Intel Diagnostic tool, which has shown as there being no problems, so i'm really stuck now.
um, those spikes are normal. you use up a lot of CPU resources to start up any software, and there's a ton of stuff running in the background for the average user even when idle. it is why there are multiple sleep states for your computer