New PC freezing (nearly) every time it idles
Pasting this from the ibuypower subreddit because it's about a prebuilt I bought from there -- yeah, yeah, prebuilts, I know; it's about the only way I could get a new graphics card right now and my old computer was in shambles. Really hoping there's a way to sort this out without needing to replace anything. I've tagged BSOD because it's the closest I could find to my issue, but note that I specifically DO NOT get a blue screen.
I received my new computer about 2 weeks ago, and have overall been quite happy. Temperatures run a little hot (my fault for the small case) but within acceptable levels. Otherwise, very good... until about 2 days ago, when it has begun to freeze most of the time when left untouched for a bit. I'm at a bit of a loss. Here's how it presents:
I have two monitors, both plugged into the GPU with display port cables. At about the half hour mark they turn off from power settings. When I return to the computer, often but not every single time (it feels like there's a minimum time of something like an hour to freeze, so if I get back sooner everything is fine), it is nearly totally unresponsive. On attempting to wake the monitors, one comes back and the other doesn't. The one that does turn on is totally frozen. At this point, my only recourse is to hold the power button on the tower. There's no actual crash, no blue screen, and no dump files after, just a hard freeze.
This isn't related to the computer going to sleep, because I have sleep/hibernate/etc. disabled. I have tried setting the timescale to 1 minute and repeatedly testing everything I could come up with that happens due to power settings -- hard disk power off, the monitors turning themselves off, etc. None of this causes it to freeze when testing. Given how new the computer is, I really can't imagine anything on the software side that could be causing issues. I'm still slowly building back up a small collection of very mainstream programs and games and stuff; there's nothing sketchy here and no device I could imagine having problematic drivers or anything (I did try getting rid of the USC DAC I have, which also didn't help).
Here are my specs:
Case (iBUYPOWER Element MR Mirror Finished Tempered Glass ARGB Gaming Case)
Case Fans (3x [Silent] be quiet! Pure Wings 2 PWM 120mm Black Fan)
Processor (AMD Ryzen 5 5600X Processor (6X 3.7GHz/32MB L3 Cache))
Processor Cooling (ENERMAX LIQMAX III 240mm ARGB Liquid Cooler)
Memory (16 GB [8 GB X2] DDR4-3600 Memory Module - G.SKILL Ripjaws V)
Video Card (NVIDIA GeForce RTX 3070 - 8GB GDDR6 (VR-Ready))
Motherboard (ASRock X570 STEEL LEGEND - ARGB Header (1), USB 3.2 Ports (1 Type-C, 7 Type-A), M.2 Slot (2))
Power Supply (750 Watt - Seasonic FOCUS PLUS SSR-750FM - 80 PLUS Gold, Semi Modular)
Primary Storage (1TB WD Black 3D Series SN750 M.2 PCIe NVMe SSD -- Read: 3470MB/s; Write: 3000MB/s)
Secondary Storage (6TB WD Black Hard Drive -- 256MB Cache, 7200RPM, 6.0Gb/s - Single Drive)
Operating System (Windows 10 Home - (64-bit))
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Edit - At a commenter's recommendation, I tried safe mode. Things are a little different since only one monitor was active there, and while I have them set to turn off at half an hour, the monitor screen went black but it was clear the backlight was still on, unlike how it normally fully shuts off. In these conditions, it didn't freeze. I'll have to test it again when I have the time, and update again if I have the problem while in safe mode, but as of now safe mode and/or the monitor difference(s) prevented the freeze.