hello guys and i just starting having a BSOD problem with my PC shortly after changing my RAM ( 1x8GB standard RAM to 2x8GB 16GB HyperX RAM) so first thing you would get in mind is that the new RAM sticks are bad , right? so i uninstalled the new RAM and installed the old RAM and still i was BSODing in stress tests and games. the configuration i have been running for 3+ months fully stable is now BSODing for no reason. so, today i reinstalled the new RAM since i know it's not a RAM issue since i BSOD even with my old RAM, reset the CMOS battery, and bumped down my CPU overclock from 4.5GHz to 4.4 GHz. until now no BSOD on about 10 passes of intel burn test
(2 minutes) which i know is not enough but i do tend to do some stress testing with AIDA64 before the end of the day. so the real question that baffled me and that i could not answer is: how can a previously stable OC (4.5GHz at 1.25v on my 4690k) suddenly become unstable with no hardware changes? my temps do hit the 80C mark occasionally on AIDA64 test but runs most of the time at high 60s to mid 70s, so i know its not a temperature issue... help?
can you try switching the RAM slots to the secondary position and check .. changing the rams may have scratched something on the board making it give the BSOD
IT'S 3AM and i have been playing h1z1 for the past 5 hours and no bsods after downclocking to 4.4 (i was getting bsod 1-2 hours into h1z1 with 4.5) so its definitely the cpu overclock, im going to run stress tests until morning to make sure its stable at 4.4 , i highly doubt the problem is with the ram though , and i will change my power supply very soon because it is most likely the PSU gone bad... will keep you updated, ... thanks man
You are bsoding under stress, not under completely idle or random circumstances right? That signals a power/temperature problem. But most likely a power problem, your power supply is not able to feed the computer anymore and so an underpowered component crashes causing the bsod.

And yes despite that your pc was fine a week ago, this can start happening, sometimes power supplies(especially if cheap non branded ones) start to fail.

Give us your entire system specs maybe we can better know what we are dealing with. Also, any crash dump files would help.
user wroteYou are bsoding under stress, not under completely idle or random circumstances right? That signals a power/temperature problem. But most likely a power problem, your power supply is not able to feed the computer anymore and so an underpowered component crashes causing the bsod.

And yes despite that your pc was fine a week ago, this can start happening, sometimes power supplies(especially if cheap non branded ones) start to fail.

Give us your entire system specs maybe we can better know what we are dealing with. Also, any crash dump files would help.
no crashes whatsoever in 10 hour stress tests and online games since i downclocked to 4.4 Ghz 4 days ago, so i am 99% sure its my PSU starting to degrade and give me less power then advertised. and i occasionally used to BSOD at idle, but 90% of BSODs were under stress. PC specs:

-MSI Z97S SLI KRAIT edition motherboard

-i5 4690k OCed to 4.4Ghz at 1.25v

-Kingston HyperX Fury White 16 GB RAM

-MSI Geforce GTX 970 Gaming 4G

-Thermaltake 630w smart SE 87% power supply (not bronze certified)

i am positive it is not a temperature problem as i have a pretty good cooling configuration and i always monitor temps.

Getting the FSP Aurum Pro 750w Gold , what do you think about this one? http://www.macrotronics.net/product_info.php/fsp-psu-aurum-pro-750watt-p-8652
I am not really an expert. I only faced a power related bsod once, and I ended up frying my motherboard before properly fixing the problem(I bought a 10$ 700 watt psu and the thing basically fried).

You did not show us any crash dumps. When a bsod occurs it creates a file that helps point to what failed exactly. I forgot where to retrieve them from... But you might want to look into it.
@Anthony2000

-Are You Monitoring Your CPU Temperatures / Voltages Under Load when it is OC - OCing a CPU on the long run causes BSOD

-Are you mentoring your GPU FPS Performance/Voltages/Temperature - if its start to under perform most probably it is a power supply problem


-What you using for Stress Testing (CPU/GPU) and what are you using to monitor your CPU/GPU - Voltages/Heat/Performance Drops

-On you Desktop Specification I do not recommend Thermaltake 630w smart SE 87% power supply especially for an OC CPU /GPU (even if the PSU is performing well) and as for the FSP / Cougar that suddenly spur in the Lebanese Market - I personally recommend to go with the Thermal Take Tough Power 850W - Fully Modular PSU



Not All Thermaltake PUS are not Reliable ; the Tough power series has proved it self to be very reliable and efficient to be used at high end systems:


http://www.overclock.net/t/183810/faq-r … r-supplies (The list is mostly comprised of high availability units offered by global brands)

Reviews:
http://www.techpowerup.com/reviews/Ther … r_DPS-850/
http://www.tomshardware.com/answers/id- … upply.html
http://www.hardocp.com/article/2009/09/ … WWWMnmJiUk
http://www.geeks3d.com/20110527/thermal … su-review/
http://www.overclockersclub.com/reviews … h_xt_850w/

Also, Corsair makes a Tier 3 PUSs (not solid) like the CS Series:

http://www.tomshardware.co.uk/forum/id- … -list.html -The Most Update PUS Units Tier List
i was going to replace my PSU anyway before having BSODs, so i will most probably go with the FSP Aurum CM 750watt power supply,and the only Thermaltake PSU i can find is the standard toughpower 750W gold which i do not want to buy for two reasons, aesthetics since it looks very cheap with very bad looking stickers and fonts, and cable length. my current Thermaltake PSU has very short cables, and when you have a case as big as the core v71, you need long cables, and after checking out some reviews i discovered this is the same case with the Tt toughpower. if i am still getting BSODs after getting the FSP PSU then i will definitely get some crash dump files to rule out the problem. i am monitoring everything, CPU/GPU Temps/Voltages.
14 days later
Okay, so just an update on what is happening:

two weeks ago a bought and installed the FSP aurum cm 750w Gold power supply. random restarts stopped, random BSODs on idle and load stopped and i didn't have any problems whatsoever. so i clocked my CPU back up to 4.5 Ghz and still no random restarts or BSODs ,and since then i have been doing some light gaming and playing some games that are really not intensive and had no problems. so last night i fired up The Witcher 3 and about 30 minutes in the game i got hit with a BSOD. so i clocked back down to 4.4 GHz and played for all night, no more BSODs. so the main problem here is that i was running my CPU at 4.5GHz 1.25 volts for 3-4 months and playing all kinds of games and now it seems that it's not stable anymore. i would bump up the voltage to 1.26v and i would probably be stable at 4.5GHz, but i don't want to have to increase the voltage 3 months after that to stay stable. can any experienced overclocker tell me what's happening?
I use an i5-4440 for gaming, max CPU utilization is around 70% while gaming 4690 @ stock speeds is beyond good enough why are you bothering with overclocking it
mmk92 wroteI use an i5-4440 for gaming, max CPU utilization is around 70% while gaming 4690 @ stock speeds is beyond good enough why are you bothering with overclocking it
Because i can. *puts on badass glasses*
@Anthony2000

Witcher 3/ GTA 5 utilize CPU computational power aside with the GPU sure. Try to stop overclocking ; and lunch Witcher 3 1440p/High setting and play for around 2-3 Hours ; and see if you will get a BSOD. If yes ; than your CPU is getting to a dead end step by step from t either from the old PSU voltage instability or/and in-educate cooling. For me if I want to overclock I usually use closed loops water cooling from Corsair (Corsair H100i or H80i) ; for CPU durability ; I get at least 80 Plus Gold Certified (Corsair RM Series or SeaSonic M12II or Seasonic X ) even if I want to order one from outside to ensure maximum voltage stability ; and I apply some Arctic Cooling MX -Thermal Compound.
Tech Guru wrote@Anthony2000

Witcher 3/ GTA 5 utilize CPU computational power aside with the GPU sure. Try to stop overclocking ; and lunch Witcher 3 1440p/High setting and play for around 2-3 Hours ; and see if you will get a BSOD. If yes ; than your CPU is getting to a dead end step by step from t either from the old PSU voltage instability or/and in-educate cooling. For me if I want to overclock I usually use closed loops water cooling from Corsair (Corsair H100i or H80i) ; for CPU durability ; I get at least 80 Plus Gold Certified (Corsair RM Series or SeaSonic M12II or Seasonic X ) even if I want to order one from outside to ensure maximum voltage stability ; and I apply some Arctic Cooling MX -Thermal Compound.
The PSU is not a problem anymore, a brand new FSP Aurum CM 750 watt GOLD should be more then enough, and i played some more witcher 3 today at 4.4ghz instead of 4.5 and still no BSODs, and temps are not a problem in witcher 3 since my GPU utilization is at 99% most of the time and my CPU is at 60-80% and temps don't go above 70 degrees celsius, although i do plan on getting a silverstone Tundra TD02.
Dude, a stable 4.4GHZ frequency is much better than an unstable 4.5GHZ frequency. I don't see the appeal and the unnecessary headache in the extra 100Mhz.
MrClass wroteDude, a stable 4.4GHZ frequency is much better than an unstable 4.5GHZ frequency. I don't see the appeal and the unnecessary headache in the extra 100Mhz.
I don't have a problem with that, but it just baffles me how a stable OC can become unstable on it's own 3 months later. what i am really concerned about is that about 3 months from now, 4.4 ghz isn't going to be stable anymore and i would have to go lower to 4.3, only time will tell.