**Update 5th Jan 2015 – I think this was due to my USB Graphics Card**
Looking in the Event Viewer, System, ever since I’ve had this PC I’ve been getting:
Windows Hardware Error Architecture
A corrected hardware error has occurred.
Reported by component: Processor Core
Error Source: Corrected Machine Check
Error Type: Cache Hierarchy Error
Processor APIC ID: 2
The details view of this entry contains further information.
update BIOS and drivers for motherboard
maybe bump up voltage. offset +0.100?
BIOS is at latest version – F7
Updated all drivers on their website ie LAN, Audio, VGA
Device manager happy.
Set motherboard back to optimized defaults.
Tried vCore up to 1.4 No difference
Memtest running - fine so far. It passed
I notice there are more errors the higher the processor load
Updated BIOS to F8b (beta) which made no difference.
On low CPU load, the warning happens every minute or so