I just built up a new system
Water cooling ( Corsair H100i GTX)
Gigabyte 970 G1 Gamer video card
Asus x99 Pro USB 3.1 motherboard
Corsair LPX 2666Mhz 32Gb DDR4 memory
Samsung 850 EVO 1 Tb SSD drive
Samsung 950 Pro 500 GB SSD drive
Corsair RM 750w PSU
That was my first version. I managed with a lot of trouble to get Win 7 Pro 64 bit installed.
But it was never stable. All my browsers crashed, All my 2 games crashed, Any application would crash. The CPU was @ 3.7 Ghz and the memory @ 2666 Mhz. Not all updates would install, even windows 10 upgrade.
Searching the net had me testing the memory. 48 hours and 8 passes, produced no errors.
More research led me to believe it was the videocard. So I swapped out for a 960ti, still the same problems. Then I swapped to a new motherboard. And memory of 32 Gb but at 2133Mhz DDR4 to keep the CPU and memory to stock clock. Same issues. If anything now I can maybe boot into Windows 7 safe mode, keeps hanging at class_pnp.sys. The windows boot manager no longer boots to the desktop, but BSOD with page fault error. A reinstall from either CD or USB hangs in the same spot and I get the BSOD page fault error, so I can't even repair or reinstall the OS. In safe mode ( when I can get in ) I manged to download the Intel Processor Diagnostic tool will not install in safe mode. Searching MS website for pagefault error points towards RAM or L2 memory.
MSI x99S SLI
Gygabyte 970 G1 Gamer
Crucial 32Gb DDR4 2133
Samsung 850 EVO 1 Tb SSD
Samsung 950 Pro 500 GB SSD
Corsair RM 750w PSU
This is how the system stands now. One thing I did note was a Windows PE boots to the desktop, since it's 32 bit. Memtest works since it also 32 bit. In fact pretty much all rescue utilities boot since they are all 32 bit. I made a WinPE x64 boot, and sure enough it crashed ( BSOD ) in the same spot with the same error as a Win7 64 bit ( OEM ) install disk.
My question - can the CPU be damaged to the point will it works ( somewhat ) in 32 bit environments, be it the OS or a Linux rescue based disc, where as in 64 bit environment it's crashes or locks up? I have ruled all other hardware except the CPU and PSU, and I do not think the PSU is under voltaging the CPU. Have you ever seen a issue like this?