PC strangest symptoms

I keep a 1000W Coolermaster on the bench for test work, it does matter about the brand, I just use to rule out (or in PSU probs) I just cheap ones in general a I except they fail and would sooner swap out a £50 one three times than blow up the £400 ones..

You don't need a "correct" PSU, you just need one that works - if indeed that is the problem. You spend more, you get reliability. But for now even a relatively cheap affair that can boot up and run your system will do for trouble shooting. If an el cheapo gets you up and running then you can consider whether it is buying something proper.

Personally I don't care much, I will use mid-level stuff all day because my home PC is just for shits and giggles and every bit of important data is backed up. If it dies, I'll fix it.

just something I note as look at the £100ks worth of kit that reports back to one of my screens (each cost more than your entire pc)

Well at least you got something to keep you going when pornhub goes down.

gen0me wrote: Im working on it. What makes you think its weak? 12*62=744W. You have in mind dishonest producer? Rest of PC is ASUS Sabretooth + FX8350 + SSD(one of the earlier ones), only 8GB Corsair Vengeance(https://i.ebayimg.com/images/g/2K8AAOSwnvdc0IkB/s-l400.jpg) Output Current +3.3V - 25 A +5V - 25 A +12V - 62 A -12V - 0.8 A +5VSB - 3 A

Just because your PSU has good specs on paper doesn't mean it can't develop a fault over time that drops the 12V rail just enough to crash your CPU. It only takes microseconds of drop out I would imagine. I have seen it before.

One thing is for sure, your hardware is faulty. And if it crashes during memtest86 which presumably you ran from a boot disc, then you can be looking between CPU, memory, mobo, and PSU. Out of those for me it would be memory and PSU under most suspicion.

Bios drop, simple boot cycle during NVRAM scavenge, please quote the specs of your PSU as you think it may have been at time of purchase, just try another, borrow a mates, I may wrong (I no longer use any poverty junk HP Z series are so cheap, so quiet, so fast, so THERE)  I literally roll around laughing at home builds, but please try another PSu just to rule it out, for ref your CX750 cost less than one third of my Z640 PSU but may be enough to hold up a slow machine if it works.

Mate, PC repair 101, ALWAYS try a known good PSU (PSUs were a £1/watt they are now £20 for 600W, I am thinking economies have been made) pull your work HDD ASAP, get a £5 crap 80GB and load W10 and run Memtest/Heavy load with HW monitor or equiv sat by it, but don't f**k with your boot drive, a few less-than-gracefull dismounts and W10 is hosed (like Bios drop from AHCI to SATA-IDE will kill a W10 boot drive)