Erratic startup success, fan spins but nothing on screen

I didn't edit anything.

Attached is the System Info file generated using the elevated command prompt.

Will attempt a clean install this evening. I'll let you know how it goes.

Alright, here goes what's probably a dumb question:

I forgot that my original hard drive I installed is partitioned into two drives: C contains the OS and program files, and D contains documents, files, etc. I also have an additional drive, K, that I installed purely for storage. I've backed up the User folder to the K drive, but don't have space to backup the entire contents of the D drive without going to an external drive (which I do have, so it's not out of the question).

My dumb question is, will the reinstall erase my D partition, or can I just wipe the C partition and redo that part? Or maybe a better question is, if that's possible, would it still fix the problem or do I need to do the full process of completely wiping the drive and repartitioning on install?

Hope that makes sense. I have a couple of external drives that I can use to backup D if necessary, but it would take quite a long time and I'd like to avoid that step if possible.

Thanks. Will likely not be able to do the reinstall this evening while I wait on the files to finish backing up. Probably tomorrow night though.

Clean installation is complete! A couple notes for full disclosure: when it asked me about partitions, I decided to format the C: partition for the reinstall, but I left my storage partition intact. My reasoning was that whatever was corrupt about the OS wouldn't have been on the storage disk. Most of what's on that partition are raw media files, mostly photo and video, as well as project files. I've got MSE running a full scan on just that partition right now to be on the safe side.

I did, however, create a full back-up of that partition before doing the reinstall, in case it seems to still be corrupt. If that's the case, I can do the install again, but format the entire hard drive instead of just the C: portion.

I re-ran the PowerShell script from earlier, but the file looked the same as the one you thought I had edited, so that worries me a bit. Windows is still installing updates, and I've got that scan going of the storage partition, so I'm going to let those finish, reboot, install any further updates, and then once it seems all situated, I'll re-run the script one more time and post the results.

Well, that PowerShell script still seems to do absolutely nothing. Here's the file that was generated just a minute ago. I didn't edit anything this time, either.