I have a Windows 10 64-bit installation on an AMD FX-7500, and for the past few weeks I have noticed that the machine uses only half the cores available to it. This is the machine booting from an SSD:
Usually both the SSD I/O queue and the CPU peak at nearly 100% when booting. CPU usage never goes above ~50%. The first level cache reported to be 448 KB is also a little troubling. The machine boots off power cord plugged in, running latest Catalyst as well as both Windows having set to Performance energy settings, as well as the installed Lenovo Energy Manager being set to Performance profile. I don't recall installing anything before I noticed this behavior.
Can anyone help me identifying the problem?