I am not sure why this thread shows as being answered, as I have read thru 30 pages and see no answer. Perhaps my experience might help us ALL find an answer to this issue.
I have a machine that I built and was running just fine until installing Windows 8 and recently 8.1. I thought perhaps my hardware was bad after many, many attempts at diagnosing the issue and this has become more and more frustrating.
My prior system had the following: Asus P8Z68 Deluxe/GEN3 with 2600K CPU, EVGA GTX560Ti Video Card.
Then I recently upgraded to: AsRock Extreme6 with i7 4770, same video card.
After several hundred dollars of changing hardware and time installing every driver I can find, the issue still remains. My DXDiag shows no issues so no reason to post another long message with that. There is absolutely no trend that I am able to identify as to when and how this happens. It can happen multiple times per day or once a week. I have done all of the usual stuff that is mentioned in this thread to say the least.
I am definitely convinced that there is a fundamental underlying reason for this that has yet to be identified. If someone at Intel could please take this seriously and find us a real solution, that would be much appreciated. After seeing the previous post on voltage adjustments, this is the first thing I have seen that might be a possible root cause and should be addressed ASAP.
I look forward to seeing a solution to this problem in a prompt manner. Please see this is escalated internally at Intel as too many OEM's are seeing the exact same issue. As a shareholder of Intel, it bothers me to see things like this take so long to see a fix.
thanks and look forward to a response,
Heath