posted in general because i'm not 100% sure it's a software issue.
Basically, long story short, I fiddled with some CPU profiling (lowered voltage slightly, then decided against it) rebooted, and now my OS doesn't work in a variety of wonderful ways, but i'm not completely sure what's causing it.
More specifically, when running in windows (safe mode or regular, not in the bios or in recovery) my computer will, after a few minutes, either blank the screen with a device disconnect sound, or completely lock up with 0 SSD throughput while the drive light is solid on. when the screen goes black other programs seem to continue running, while when the OS freezes programs will continue running so long as they don't wait for IO. In both cases my computer is inoperable until I restart it. Additionally, after one black screen crash my graphics card outputted a very glitched display when the machine was next run(in BIOS, before OS), restarting corrected this.
I have tried safe mode, uninstalling graphics drivers, using restore points, resetting CMOS, running windows memory test, running chkdsk(multiple times to try and catch the disconnect), and reseating as much internal cabling as I can. All tests come back with no issues, all attempts to fix the problem have failed. All tests were, as necessary, run outside of the windows environment, where I experience no issues.
I'm fairly certain this is an issue with a freshly corrupted windows installation thanks to some tremendously bad undervolting luck, and my next step is to reformat my computer after copying files from the recovery command prompt, but I can't shake the feeling this could be a hardware issue.
I'm wondering if anyone here has had experience with similar kinds of crash behaviour, or may know something about this that I don't. If that's the case, please give me a hand here, I hate not being sure how i'm going to fix this.
Thanks a tonne for your time and help
firstname.lastname@example.org, P8P67 PRO, 8GiB DDR3@1.6ghz, GTX 570, Xonar DX, Intel 510 120GB, Deskstar 7k3000 3TB, Corsair 600T, OCZ Fatal1ty 750W.