apc_index_mismatch system destabalizing?

[BlueDogAnchorite]

my nvidia driver has started to cutout and recover many times a day. I also had a boot failure, and got a screen telling me i had changed voltages or overcloked, I had set the memory slightly faster when i first bought the system over a year ago, but the memory was supposed to be set at that level, i just had to manually change the rating for some reason.

I loaded fail-safe defaults in the bios just in case and was good for a few days. but i have had the disply start to cut out again after getting that bizzare apc _index error. it dumped all physical memory too.

I have no idea whats wrong with my computer.. any help would be appreciated thanks.

 

[BlueDogAnchorite]

sometimes the display doesnt recover and i have to reset it. I have no on screen artifacts. no idea what i can do to test if its the motherboard, gpu or psu,

 

[BlueDogAnchorite]

my computer became unbootable unfortunately, resulted in a bsod and system restore is shit now, the hell only had 2 points going back 2 days. what happened!

I decided to do a new install on my primary drive, i didn't format it or anything, i copied my old files over from windows.old.

I will point out that my display is connected to the graphics card atm, and so its not on board graphics im utilising, i dont really understand how the gpu can work before i have installed any drivers, but hey.

Everything was working fine, I installed my basic programs again, but when I went to install the the gpu drivers, i couldnt get to my desktop on the next restart...

windows startup was however able to fix it, telling me on one occasion it was a driver and on another that it was a patch that was preventing me from getting to windows.

I decided to do a fresh install on an old backup drive and I was able to actually install the drivers without any damn problem..

I am going to install my common programs on the backup drive and see if its a conflict between a new version of one of those programs and my gpu drivers.

If its not that.. does that mean when I did the new install on my primary drive, some part of windows still was around from the last install somehow? can windows do that?

Getting closer at least. Can anyone think of anything else for me to find out exactly waht the problem is? Thanks.