I have recently updated win7 in MS and lost one of my quad cores???
I have tried going into msconfig and checking the number of processors to reset it but it's only showing three.
I then tried uninstalling the processors from Device Manager in case it re-found them all again, No joy!
I suspect it is an issue that Ms update has passed onto my bios but don't have the slightest clue what it maybe could someone please help me.
Hunter 315, thanks for your input on this,
I had tried that but to no effect unfortunately in the end I took an old BIOS Flash and loaded it onto a DVD re-started going in to the BIOS and then flashed it then re-booted shut it down switched it off from the PSU switch unplugged it the power lead and re-booted, Job done, I had actually remembered that this has happened once before then i corrected it, thanks for your time. much appreciated
I have the same problem.
I lost 2 cores of my 965BE and then another one went missing.
Tried everything except re installing windows and flashing the BIOS.
I googled and this has been happening since 2010.
But MS update win7 every day or two, so I don't really think that caused it. But maybe it did.