For the past month or so now. My system has been suffering from random lock-ups and/or instant power offs, without warning. This problem usually occurs whilst gaming at random intervals, and occurs whilst running OCCT power supply auto test with defaults. This system occasionally, but rarely suffers from a Memory Management BSOD but that can occur when just generally browsing the internet or anything else.
Memory Tests - All passed (various utils)
Temperature monitoring (all temps are in within range, but still fairly high, the northbridge usually runs at 72c just before shutdown, the gfx card also runs around the 70's mark.
Thermal paste replaced on CPU.
All vents and fans cleared
Different RAM stick tested.
Hard drives swapped out, changed around, SATA channels changed etc.
Ran prime95 and OCCT, core 5 produced an error in prime95. OCCT power supply test reproduced the random gaming shutdown. Sensors all within tolerance.
Due to core #5 error, bios changes: Disabled CPB on the CPU and Disabled cores 5-6
Since the last step, i've yet to have a random lockup or power off. However, i've not clearly managed to figure out if its a faulty CPU core, or perhaps a failing power supply, hell even the motherboard. I'm looking for opinions, i've also tried the obvious such as windows reinstall, driver updates and rollbacks etc. Any help regarding more testing or anything else would be fantastic, its been perplexing me for a while now. Please bear in mind, that I'm assuming the memory management BSOD and (possible) CPU core failure are related.
Edit: Since disabling the CPB and the cores 5-6. System temperatures (Northbridge/CPU) are MUCH cooler. Region of 20c cooler in fact. Northbridge is currently running at 51c whilst gaming (previously was in the 70's) and the CPU temp has dropped to mid 30's with a max of 40c.
Another test with memtest86+ from Hiren's Boot CD this time. Came up with a couple of errors during test #5 and 1 error in test #6. That was the original run yesterday. Ran again this morning, using just test #5. Came up with 4 errors.
Does this conclude that the ram is bad? or is it still something else?
I don't think it would be your ram as I have had ram fail before and if it fails its dead
it sounds to me more like a power supply problem what is your power supply and have you added
any thing that mite be draining it more than normal
Yes all drivers up to date. No cleaning software required, tried fresh installs of windows on all drives. I've removed the system to bare basics (no usb devices, single hard drive etc), and still had the power offs. Since the memtest errors, ive sent off an RMA request to Corsair, they'll take a look at the ram and send a replacement back. Thank god for lifetime warranty. The PSU is a 650w CIT model.
hay I don't want to anion you but I just looked up your psu and with what you are running
it is insufficient power this is only ment to run a low end i5 -2500k max so
when you are trying to play high end games you are drawing to much out of it
so it is shutting down and i think that is your problem you can buy this in a 750w and even an 850w