I have a quad core processor.
AMD Phenom II x4 965 3.4 MHz
Which is about a year old. It has never been overheated and has never really been stressed for any long periods of time. I don't think I've seen the usage get over 50% even when doing heavy computing.
Its a sweet lil processor :)
When my Motherboard boots up it always says how many cores it loaded. Recently it is now only loading 3.
It states roughly "3x cores loaded (0,1,2)"
I am also monitoring my CPU temps with windows 7 gadgets and that too now only picks up 3 cores?
What would have caused a core to vanish all of a sudden? Do I need to update BIOS and what do I risk in doing that?