System will run OK for several hours to several days unless I use some intensive processor programs like a video rendering program. But even if I just let the system idle, it will eventually blue screen and reboot. I ran the Intel diagnostic tool and it fails the clock test and produces a warning about the CPU freq. Reset the Bios to default settings and got the same results. System is pretty basic. I have attached the test result file for reference.
MB is an ASUS Z87-A
OS is Windows 7 Pro patched to current
using on-board video and sound (no video or sound boards)
8 GB DDR3 Crucial memory part number BLS4G3D1609DS1S00
Western digital disk drives 1TB HDD and 1 3TB HDD
LG optical drive
600 watt power suppy
I am sorry you are having this problem with your processor but let me help you.
I see you have run the Intel® Processor Diagnostic Tool and the test failed and besides this, you mentioned the system is unstable when running heavy programs.
Based on the tests you have done and results received, my best recommendation is to contact your Intel® local support for them to help you with a possible replacement.