occt power test black screen

March 25, 2024 - Hello everyone, I'm encountering a particularly stubborn issue with my PC, leading to crashes under specific conditions, and after several diagnostic attempts, I'm seeking insights from this knowledgeable community. y system consistently crashes to a blue screen showing the Stop Code: CLOCK WATCH...

PC Help Forum

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OCCT CPU test - black screen | PC Help Forum

July 29, 2023 - I also tried to check Event Viewer but it just says: “Event ID 41 - The system has rebooted without cleanly shutting down first.” I then downloaded OCCT to run some tests and check what component was making the computer to “shut off”. I first ran the power stability test and the screen went black instantly after i clicked the start button.

Overclock.net

overclock.net › home › forums › components › power supplies

Occt power test instant crash | Overclock.net

July 31, 2021 - When running occt psu test it will instantly crash and stop the test 4/5 times. Do I need a 1000w psu. I have 5900xt, 6900xt lots of fans and two pump watercooling system. ... More detail on the system? What PSU and how exactly are you running cables to it? What temperatures do relevant components reach. A 5900X can spike to about 250w for short periods, if you let it, and if you've got a 6900XT that came with a waterblock, or you've messed with power limits, that can mean huge transients, as OCCTs GPU test, even on the lowest shader complexity, will max out the power limit.

reddit.com › r/occt › power test instantly causes my problem - black screens + loud gpu fan until i turn off at the wall

r/OCCT on Reddit: Power test instantly causes my problem - black screens + loud gpu fan until I turn off at the wall

October 5, 2022 - Come talk about OCCT, bugs, overclocking, feature requests,... ... Hi, I've been trying to diagnose the cause for the past week, basically as the title says. I've noticed the black screen crashes i've been getting seem to happen in-game when there are smoke effects taking up much of the screen? I found this software and tried testing VRAM on someone's recommendation, was fine. Then I tried the power test and instantly had the black screen crash.

OCBASE

ocbase.com › occt

OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC

This test is very fast : usually, an undersized power supply will go into protection mode very quickly, resulting in an abrupt black screen, and heat will build up in your case by the huge amount of power consumed, putting your cooling system to its limits. We advise running this test first, ...

reddit.com › r/occt › black screen crashes, am i cooked?

r/OCCT on Reddit: Black screen crashes, am I cooked?

August 22, 2024 -

Hi, writing this from my phone as I currently have no functioning computer.

Ever since around mid June, I've been starting to get black screen crashes whenever (and only whenever) playing videogames. At first they were so scarce and only happened on one game (Dark and Darker) I thought it was just a driver issue, but since then, it's only been getting worse, happening often, more rapidly, and with more and more videogames.

To describe the error, it can happen at any moment regardless of CPU/GPU usage. The screen suddenly goes black, sound is cut immediately, all USB connected peripherals lose connection/power (mouse, keyboard, microphone and Xbox controller), the fans of my computer (AIO and GPU) continue to work, however, and my motherboard's BOOT LED (ASUS B450-I ROG) turns on. It stays in that position indefinitely, and I can only shut it off manually to then restart my computer. These crashes ONLY happen while gaming, but I can easily replicate them through one certain stress test.

I have tried updating the Chipset drivers and BIOS, uninstalling drivers through DDU, doing a clean reinstall of Windows, I disabled DOCP/lowered my RAM's speeds, I tried with various configurations of Secure Boot and CSM, I tried resetting, and also changing my CMOS battery. Scans with SFC/DISM/CHKDSK have never showed corrupt files, before or after reinstalling Windows 11, and these crashes also happened on a separate SSD I installed Windows 10 (clean install with nothing but the latest AMD Drivers, Steam, and OCCT installed) on.

Reliability monitor always gives me either HARDWARE ERROR (codes LiveKernelEvent 141, a1000005 or a1000001) or a simple "Windows has unexpectedly shut down" prompt with no discernible/additional info, while event viewer itself only shows Critical 41 (Kernel-power) at the exact moment of crashing.

Now, I have began doing extensive tests of my own, mainly through OCCT and Memtest86, and these are some of the results I've gotten:

Memtest86 (DOCP enabled, 3200mhz speeds) Passed, no errors.
Memtest86 (DOCP disabled, 2933mhz / 2400mhz speeds) Passed, no errors.
OCCT CPU test (1hr, 100% usage) Passed, no errors.
OCCT GPU VRAM test (1hr, 95% usage) Passed, no errors.
OCCT GPU 3D Adaptive test (1hr, from 20% to 90% load at .5sec intervals) Passed, no errors.
OCCT GPU 3D Standard test (1hr, 100% load) Passed, no errors.
OCCT Power test (1hr, Auto settings) Crashes my computer, no earlier than five minutes, no later than 10, and detect no errors before suddenly shutting down.

Temps always climb steadily and I've never seen them ahead 72°C on either CPU nor GPU, even after extended periods of time, so overheating and thermal throttle are, imo, out of the question. Since power test also crashes so quickly, I couldn't imagine temps being an issue either, as OCCT never shows then ahead of the 60°C threshold at the moment of crashing.

As for my current PC specs:

AMD Ryzen 5 3600x CPU
AMD RX7600 ACER PREDATOR GPU
16GBs DDR4 RAM (3200mhz)
ASUS B450-I ROG STRIX Mobo
Cooler Master V650 sfx gold PSU

Because of all these crashes, the lack of evidence Windows itself provides (as it also refuses to create crash dumps whenever crashing), and the fact I can only reliably replicate this issue through a simple power test on OCCT, I arrived at the conclusion it HAS to be a power supply issue. Luckily I still had a active warranty, and the store I bought it from has requested it be sent to them for "technical review", but the process has been tedious, slow, has left me without a computer, and actively toyed with my emotions (They contacted me yesterday saying they verified the issue with my PSU and that it was indeed defective, then hours later told me they had mistaken my case with a different one, and that the PSU hadn't actually reached their facilities).

Any advice or ideas on potential issues I may have overlooked would be greatly appreciated.

Top answer

1 of 3

Is there a way you can try this with a different PSU? It does look like there is something afoot with that part.

2 of 3

Generally if windows has been clean installed and you are failing OOCT power test within that short amount of time. The PSU is either bad, not pushing enough power, or rails (cables) are bad. Easiest test is just buy a PSU, swap it and test. If it doesn't fix it, return it.

Tom's Hardware Forum

forums.tomshardware.com › home › graphics cards

Question - The screen goes black during the OCCT 3D Adaptive Test and power test. What should I do? | Tom's Hardware Forum

January 8, 2026 - The problem is most likely with the graphics card. I didn't experience any issues with the VRAM test. When the graphics card is at 100% load, the fans start running at 100% speed, and even if it doesn't overheat, the screen completely blacks out after a while, but the system is still running...

Tom's Hardware Forum

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[SOLVED] - Instant shutdown with OCCT PSU/GPU tests | Tom's Hardware Forum

Top answer

1 of 4

Hello, First of all, sorry for my english, I'll try my best. :) I don't OC my CPU or GPU. The latest change I made was the replacement 6 months ago of the GPU, a AMD 7850 that died for a RX 590 Nitro+. I play Wow Classic, Overwatch and Ori and the will of whisps. A few days ago, Ori started to freeze/crash after a few minutes of playing (so far more than 20 hours without any issue). Same thing occurs with Overwatch, game freezes/crashes (sound still works), back to desktop, sometimes I need to manually end the task. I played WoW for 2-3 hours yesterday without any problem. I guess WoW requires less resources from the GPU. I tried again Overwatch and crashed after a few minutes again. Memtest86 on my RAM => OK Then, I tried running other tests for hours with OCCT. CPU : OK Memtest : OK GPU / 3D : test with default value (complexity of 3) --> reboot within 10 seconds (Asus anti surge was triggered to protect system) I tried running shorter tests (5 minutes) with less complexity complexity 1 : OK complexity 2 : 1-2 errors I have noticed something else : the more complex the test is, the more I heard weird noise (like clicks) coming from the PSU. complexity 8 : instant shutdown/reboot PSU : instant shutdown/reboot (Asus anti surge again) Then I removed the GPU (RX 590) and run the tests with the onboard GPU : GPU / 3D : test canceled by user after 3 seconds ? PSU : test canceled by user after 3 seconds ? I tried with a pretty old GPU (ATI Sapphire X1950 GT from 2007) : GPU / 3D : no issue PSU : no issue I can't tell if the issue is coming from the GPU or the PSU, because the more load I put on the more reproducible the problem is. I tried removing and reinstalling AMD drivers --> no change. I have cleaned the dust from all the fans, removed and replaced the RAM sticks, GPU, connectors, etc... Here is my configuration, all parts are almost 10 years old and everything was working fine so far : PSU : Antec Neo Eco 520W MB : Asus M4A88T-V Evo USB 3.0 CPU : AMD Phenom 2 X6 1075T + Scythe Shuriken RAM : 12 Go DDR3 24 Kingston PC3-10700 and 22 GSkill PC3-10700 GPU : Sapphire RX 590 Nitro+ I am thinking the PSU is faulty but I can't be sure... Thanks in advance for any help. Graad Your PSU can output 480 watts on the +12volt rail if it's working properly. Your system, under heavy load with a 125 watt CPU and 250 watt GPU and the rest of the build will use around 400 watts, maybe more. You're pushing an old, budget power supply pretty hard under load. You really should be using a much better quality PSU around 650 watts with that RX590 NITRO.

2 of 4

Thanks a lot, I will buy a new one and it will be a good start to check the issue. Do you have good recommendations for the PSU ? I know Seasonic PSUs have good critics, but in case I am struggling to find one, what are there other models ? I can have a FSP HYDRO G 650 - 80+ Gold for 100 euros which is ranked 5 in the tier list according to this site https://10scopes.com/psu-tier-list/ Thanks The Hydro G is a solid unit. We have a tier list here at Tom's and the Hydro G is in the top tier A. https://forums.tomshardware.com/threads/psu-tier-list-psucultists.3624094/ There's also an in-depth review of that model right here at Tom's- https://www.tomshardware.com/reviews/fsp-hydro-g-650-power-supply,4462.html

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Tom's Hardware Forum

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Question - Black screen, fans at full speed, GPU driver disabled by Windows. OCCT PSU Test Pushes CPU to 100°C leading to crashes. | Tom's Hardware Forum

January 2, 2024 - - The following information was included with the event: ACPI 2." Some clues make me think it could be a GPU problem, others suggest the CPU, and I'm also considering a power supply failure. That's all I can tell you about my problem. If you have any ideas, I'm open to suggestions! I can provide Windows Event Viewer logs if necessary or a video of OCCT monitoring during a crash in the middle of a game.

Windows 10 Forums

tenforums.com › general-support › 169060-unable-find-root-cause-black-screen-crashes-pc.html

Unable to find the root cause of black screen crashes on PC - Windows 10 Help Forums

November 25, 2020 - ) Modern TV Screens can be easily used as optional monitors but be very sure about the cables. Thanks. ... ... Download OCCT. Run the "OCCT" test and check the "CPU", "CPU die" and "VRM MOS" temperatures. Also see if it encounters any errors. Run the "3D" test and check the GPU related temperatures. Also see if it encounters any errors. You can also do the "Power" test.

reddit.com › r/occt › pc immediately shuts down on power test

r/OCCT on Reddit: PC immediately shuts down on Power test

June 23, 2021 -

Hi all,

I've just downloaded OCCT today after trying to find the root cause to a PC crash/restart I've been having, and now OCCT causes my PC to immediately shutdown when running Power test.
I built the PC with all new components (expect from GPU which I have since replaced and still experience the issue).

PC Specs:

Case: Phanteks P400a
Motherboard: MSI Meg Unify X570
AIO: MSI MAG 360mm
RAM: Corsair Vengeance RGB Pro 32gb (2x16gb) DDR4 3600mhz (with 2 light enhancement kits)
CPU: AMD Ryzen 9 5900x
GPU: XFX Speedster MERC Radeon 6900XT (Black edition)
PSU: CORSAIR HX1000 Modular ATX PSU - 1000 W
GPU Support: UpHere (G276ARGB)
Storage:
Sabrent Rocket Plus 1tb NVME M.2
6TB HDD and my old SSD's (500gb + 250gb)

PC Crash/Restart:

My PC randomly restarts when playing COD Warzone. I don't play many other games but often working on the PC for 9-11 hours a day before playing games and never had any issues.

This has been happening since I built the PC in December, and has happened around 6-7 times now. It's really inconsistent as to when it happens and I've not been able to pinpoint it to an exact action/scene in-game.
There was a period since perhaps late March after I changed some settings (disabled power-saving mode & turned off automatic Windows updates), but has now come back and happened twice in the last week.

I received an event log for today's crash which was:
'Event 41, Kernal Power' - "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."

Following that information, I eventually found myself with a potential PSU issue which is where I discovered OCCT to perform some stability & stress tests, which is what's lead me here with my PC immediately shutting down when running a test.

The exact steps were as followed:

Downloaded & installed 'OCCT PERSONAL STABLE (x64) 8.2.1' from ocbase.com
Launched the application
Bit of navigation and research to figure out what I needed to run. No settings were changed.
Under the 'Test' page and 'Test Schedule' menu, selected 'Power'.
- Instruction set = Auto
Selected the large red button to run the tests
Presented with a popup related to the Pro version and directed to a web-page to be able to continue to execute the test
Hit the red button again to begin the test
PC turned off
Waited patiently incase I missed a prompt/warning notifying me that the PC would turn off, but after about 5 minutes nothing happened
Tried to turn on the PC to no avail
Turned the power switch on the PSU off & back on
Tried to turn on the PC to no avail
Repeated power switch step whilst also unplugging PSU cable and then replugging
PC turned on as expected

If any one has the answer to the PC Crash/Restart issue then I'd happily propose to you, but mainly looking for advise and support on the OCCT issue and why it turns my PC off completely and why I have to unplug & plug PSU cable back in for it to turn back on?

Thanks in advance <3

Top answer

1 of 5

This one's easy : a clean, instant shutdown on the power test is 99% of the time caused by a power supply that can't handle the load. Games don't load your components at 100% - sometimes it's waiting on the CPU, sometimes in the GPU, so things even out at a rough 50-70% usually ( depending on the game ). Sometimes you encounter conditions when the load will go higher - the scene to draw is simple, another process kicks in on your CPU, ... And this is when your PSU puts itself in safe mode as it detected that it couldn't handle the load. In short, you triggered a protection feature on your power supply because it can't handle the load. There're two ways of fixing this : change your power supply to a higher rated ( and known brand !) one. Another way of tackling this is to lower the power consumption of your computer : undervolting your GPU, undervolting your CPU, lowering their frequency in the process if not enough. It'll cost you some performance probably, bit at least you won't reboot. If you can afford it, I recommend changing your power supply, as it is, in my opinion, one of the most critical components of your computer. It's feeding every pricy component with power, and if it fails, there's a possibility it won't go down alone ( even if there're protections as you experience them here).

2 of 5

This is a dead ringer for a power supply issue... I am pretty active on the EVGA forums and Corsair power supplies not being able to deliver the advertised wattage or just having general stability issues is a fairly common problem. The issue started to show up around the launch of the 2000 series GPUs from Nvidia and than with the 3000 series launch it kicked into overdrive. Ironically the issue seems to be more of a problem with there larger more expensive "high end" PSU than there cheaper units. I believe the issue to be caused by one of two things or a combination of the two... A lot of the "higher end" PSU from Corsair including the one that you listed use a multi rail system. Without getting too technical and diving into this too far... Basically your PSU can output 1000 watts total, but since it is a multi rail PSU, lets say two rails, each rail can only output 500 watts total. If you exceed this 500 watt limit on a given rail the PSU will shut down for safety reasons. In some cases I have seen in person that the Corsair PSU just cant output there advertised wattage. It is my belief that Corsair was taking advantage of there consumer by advertising there PSU as being able to output at one wattage when the actual output capability was far less. For the most part consumers were grossly over estimating the size of power supply they needed so Corsair was able to get away with this for a long time. However when the 2000 series and 3000 series GPUs launched an actual need for these 1000 watt power supplies developed thus exposing that Corsair PSU could not deliver. It appears from looking at the Corsair website that your PSU has a switch on the back of it that will allow you to disable the multi rail functionality. Yours may or may not have this... If that is the case I would disable it and see if that resolves the issue. As far as balancing the load across the two rails you will NOT be able to do this as Corsair does not provide the consumer with the information needed to be able to do it. Even if the above corrects the issue I would advise getting either an EVGA or Seasonic PSU at some point in the future. I do not recommend Corsair PSU to anyone at this point...

reddit.com › r/occt › question about power test.

r/OCCT on Reddit: Question about Power test.

December 16, 2023 - I've run OCCT's Power test and the PC would give me a black screen with fans spinning like mad at around 3 mins into the test (that doesn't happen when my PC unexpectedly shutdowns though, when it does it's more like it has just been unplugged from the socket).

Overclock.net

overclock.net › home › forums › intel › intel cpus

Flashing White to Black screen during OCCT Test | Overclock.net

Hi, I had my Q6600 overclocked to 2.7GHz. I wanted to test if the system was stable because I had a crash when I connected to a new server. So I restored the BIOS settings (therefore clocking my Q6600 back 2.4GHz) and ran OCCT. About 5 minutes in my screen started to flash between black and white.

reddit.com › r/overclocking › my screen goes black in occt during vram testing, is this something to be worried about?

r/overclocking on Reddit: My screen goes black in OCCT during vram testing, is this something to be worried about?

April 29, 2025 -

I have a RX 6800, i7-13700, and a EVGA 750 bp power supply. I recently tried doing a OCCT Vram test and it keeps crashing (usually within the first minute). I have it set to 100% Vram load and seems to fail even on stock settings. This only seems to happen during the Vram benchmark. Is this something to be worried about, and how do I fix it?

Top answer

1 of 2

Well.. how do you fix it? Stop doing the OCCT test. If your 4 year old GPU is performing as expected in all other use cases why put it under an extreme stress test.

2 of 2

What about just stop playing around with it and leaving it on default? Maybe that’s a possible fix.

Tom's Hardware Forum

forums.tomshardware.com › home › systems

Question - New build turns off randomly upon opening programs or games - OCCT PSU test shuts down PC | Tom's Hardware Forum

December 11, 2023 - Apparently the crash is coming from C:\Windows\System32\drivers\intelppm.sys ... If your PSU is bad, 99.9% of the time you will get a shutdown with a black screen with no BSOD or minidumps as there is no time for that to occur when the computer gets cut from power nearly instantaneously.

reddit.com › r/occt › occt power test causes instant bsod

r/OCCT on Reddit: OCCT Power Test Causes Instant BSOD

May 28, 2022 -

A couple years ago I built a PC (info below) and it ran great for about 18 months before it started crashing under heavy load (Event 41Kernel-Power). Long story short the power supply was the problem (Corsair RM850x) but Corsair quickly replaced it and it's been working fine since. Fast forward a couple months to today it's happening all over again. This time around I stumbled across OCCT and decided to try it out, so I went to: Test/System/Power/Play with default settings (until cancelled and Auto). Soon as the countdown pop up hit zero I got a blue screen. Tried again, same thing. Reverted all overclock settings (and memory timings) to factory settings and tried once more, same. Only difference this time is the test ran long enough for my cooling equipment to roar to life before shutting down ( roughly 10-20 sec +/-). Anyway that's where I'm currently at, any ideas?

I've been building my own PC's for about 20 years and never had a power supply go bad on me once, let alone twice in one build. Is this sorta thing common?

Anyway thanks in advance for any help, I attached a screenshot of my PC specs as seen from within the OCCT app, thanks.

Top answer

1 of 1

I've been having the same problem. Tried to run OCCT to check PSU because of certain app/game crashes but every time I click on it I get instant BSOD. The PC was running fine for 6 months and now I get these crashes. Were you able to solve your problem? Do you think it is strictly about PSU(mine is brand new)?

Overclock.net

overclock.net › home › forums › components › power supplies

OCCT Power test crash | Overclock.net

August 30, 2025 - You run it while you sleep. with overcurrent protection there is a “click” from the PSU as the relay trips. If you hear that it’s overcurrent. If you don’t it still might be. The solution is a bigger PSU Or limiting the cpu/gpu so they draw less power.

reddit.com › r/occt › power test displays... lots of errors (new to app, have no idea how to read anything)

r/OCCT on Reddit: Power test displays... lots of errors (New to app, have no idea how to read anything)

April 18, 2025 -

Hi, done a general 1hr power test a couple of times and it threw this both times. No idea what I'm doing.

Top answer

1 of 2

https://discord.gg/zkXV2V3s best place to go for some help. Its the official discord for the app.

2 of 2

I’m getting the exact same amount of errors, 785808 at a time… I’m very curious as to what this is. The only issue I’m having with my PC is a system crash at full load, but if I limit power consumption to 85% in MSI afterburner I don’t crash at all, even after hours of full load.

Microsoft Learn

learn.microsoft.com › en-us › answers › questions › 3918909 › random-black-screen-with-kernel-power-41-gpu-drive

Random Black Screen with Kernel-Power 41, GPU Drivers Not Working After Restart - Microsoft Q&A

January 27, 2025 - Initially, after powering it back on, the monitor didn’t display anything. Later, it started working, but the black screen issue began occurring randomly. When I restart the PC after a black screen, the GPU drivers stop working, and my monitor is stuck at 1 Hz. I’ve tried the following steps without success: Performed a clean driver uninstall and reinstall multiple times using DDU. Tested previous versions of the GPU drivers. Ran OCCT PSU tests, which reported "no errors found."