Help diagnosing GPU/MB/PSU issue (no video output, unresponsive like its shutoff but RGB/power LED on)
Update edit: [apparently](https://linustechtips.com/topic/1254686-solved-3090-fe-crashingrestarting/page/2/) the EVGA GA series of power supplies have problems with RTX 3000 series GPUs. It seems that while they are capable of supplying enough wattage they are incapable of handling "transient spikes" in power draw from the GPUs. Going to mark this as solved.
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I have an issue where during high GPU power usage the screens go black and the computer seems unresponsive. RGB is still going, power button LED is on, but if I hold the power button the system will not turn off. Sometimes the HDD light will be flashing and one of my hard drives will be beeping and sometimes it continues to do this for awhile after rebooting. I'll describe where I've run into the issue as well as my own troubleshooting and hardware changes. I've also linked my HW specs, a HWInfo64 stress test log per this subreddit's guide, as well as a HWInfo64 logs for an OC Scan and a Bright Memory stress test where the system shut down.
I've run into this issue when doing the following: - Running OC Scanner auto OC tool in MSI Afterburner - Couple times when I toyed with NiceHash mining months ago - Some stress tests
I first ran into this issue months ago when running Nicehash overnight (medium optimization). I was trying to recoup some of the high cost of a Zotac RTX 3080 Amp Holo and a couple weeks after starting I awoke one morning to find my screens black and the computer unresponsive (but seemingly still on, since RGB and power LED were on). The HDD light was flashing and one of my hard drives was beeping (video linked below; no warnings/errors found; spec link below). It seemed random when this would happen as it might happen some nights and not others. It was running around low 200W, at the time, with low temps.
I later found that this problem would also show up during some stress tests after overclocking the GPU using OC Scanner (nVidia tool included in MSI Afterburner), specifically extended stress tests using [Bright Memory Infinite Ray Tracing Benchmark](https://store.steampowered.com/app/1409670/). After running for some time, the time seeming to be random, it would all go dark and the HDD light/beeping would commence until power button on PSU was turned off.
Thinking perhaps the mining had damaged my card, I managed to buy another Zotac RTX 3080 Amp Holo but found it had the exact same issues. This led me to believe it may be an issue with my power supply. At the time I was using an [EVGA 850 B5 (80+ Bronze)](https://www.evga.com/products/product.aspx?pn=220-B5-0850-V1) which seemed more than capable of providing all the necessary power but I thought perhaps some component may be broken/damaged introducing intermittent issues.
I changed the power supply to an [EVGA SuperNOVA 850 GA (80+ Gold)](https://www.evga.com/products/product.aspx?pn=220-GA-0850-X1) however this didn't change anything. I practically gave up at this point and figured I would just not overclock the GPU at all, however...
Recently while picking up a TV at BestBuy, there was a guy out front handing out vouchers to buy GPUs of which they only had 3090's in stock so I bought one. Unfortunately, I've run into that same problem again but this time I can't even finish an OC Scanner auto-overclock routine. It didn't happen during the stress test procedure from this subreddit's guide but I did log the data from it happening during an OC Scan routine as well as about 20 minutes into a Bright Memory Infinite Ray Tracing Benchmark run (didn't think it was going to but when I moved my mouse it happened).
I'm really not sure what the issue might be. I've replaced the GPU twice and replaced the PSU. Max GPU power is around 400W and CPU package power was around 65W; [EVGA efficiency graph](https://images.evga.com/articles/01340/850GA_PowerChart_1000.jpg) shows min efficiency of a little over 86% (731W) so I should have plenty of power available. I've also cleaned PSU dust filter and ensured eco mode is off in case it was a PSU airflow issue. PSU seems to be working fine; not hot, no strange noises, etc.
I don't know what the HDD led flashing and beeping is about; I can't find any warnings/errors reported by the HDD nor is there any performance problem with the drive. Drive's not hot, around 40C which is the same as my other components. I ran Seagates testing tools which found no problems. Seagate says there are no speakers in the drive so I'm not sure what's going on in there, maybe some sort of standby mode? I noticed, however, that if it's making the beeping noise and I use the drive for something the beeping will stop so maybe the arm (but not sure why). HDD issues seem a symptom, however, or whatever's causing the system to basically shut down.
Is there something on the MB that might have failed (perhaps not catastrophically)? How would I diagnose/troubleshoot that? I can't seem to find any anomalies in the HWInfo64 logs but honestly I don't know what I'd be looking for. Voltages all seem to be where they should.
Links: HWInfo64 system report - [HTM](https://www.mediafire.com/file/0n2wkvsvlipkhyk/sysinfo.HTM/file) - [XML](https://www.mediafire.com/file/xr4mn0l4quk7b38/sysinfo.XML/file)
Logs: Stress Test HWInfo64 Log - [CSV](https://www.mediafire.com/file/95e5ql34720vbvb/stresstest.CSV/file)
HWInfo64 log during OC Scanner failure - [CSV](https://www.mediafire.com/file/ci19ccj01bcltc3/OC_scan.CSV/file)
HWInfo64 log during Bright Memory stress test failure - [CSV](https://www.mediafire.com/file/8y26gffgw0woz0w/bright-stress.CSV/file)
Vid showing flashing HDD light and beeping (~8.5MB) - [M4V](https://www.mediafire.com/file/ld2brfn8pef7gjf/20210720_215757-1.m4v/file)
Related system info (most in files above but listed for convenience): MB: [ASUS tuf gaming x570-Plus (wifi)](https://www.asus.com/us/Motherboards-Components/Motherboards/TUF-Gaming/TUF-GAMING-X570-PLUS-WI-FI/techspec/) (latest non-beta bios, 4002)
CPU: AMD Ryzen 7 5800X
Ram: [2x16GB G Skill 3600 18-22-22-42 1.35V](https://www.gskill.com/product/165/326/1562840461/F4-3600C18D-16GTZN-Overview)
GPU: [nVidia RTX 3090 FE](https://www.nvidia.com/en-us/geforce/graphics-cards/30-series/rtx-3090/) (current)
[Zotac RTX 3080 AMP Holo] (https://www.zotac.com/in/product/graphics_card/zotac-gaming-geforce-rtx-3080-amp-holo?__cf_chl_jschl_tk__=pmd_35411f5ac9b893ed61562af916bc3f5c73d984ce-1627071771-0-gqNtZGzNAiKjcnBszQhO#spec) (previous)
PSU: [EVGA SuperNOVA 850 GA 80+ Gold](https://www.evga.com/products/product.aspx?pn=220-GA-0850-X1) (current)
[EVGA 850 B5 80+ Bronze](https://www.evga.com/products/product.aspx?pn=220-B5-0850-V1) (previous)
Beeping HDD: [Seagate Exos 7E8 8TB SATA 7200RPM ST8000NM000A-2KE101](https://www.seagate.com/www-content/datasheets/pdfs/exos-7-e8-msft-data-sheetDS1957-5M-2005US-en_US.pdf)