Problems immediately following Windows 10 clean install

I recently began having issues with Windows 10 (problems with the start menu not opening, the troubleshooter not being able to start, indexing repeatedly turning on and off, etc.), so I decided to do a clean install of Windows. I had some issues with the installation at first (kept getting BSoD from CRITICAL_PROCESS_DIED"), but I was eventually able to complete the install without this problem. The new Windows 10 installation, however, had the exact same problems as the old one. So, I tried a few things to perhaps fix the installation:

1) Recreating the USB installation media
2) Using a different USB for installation
3) Trying install on a different hard drive

All of these attempts resulted in the same problems as stated above immediately after install (first login). I get an error on startup related to Windows Defender. I can't troubleshoot anything because the troubleshooter won't load. Windows also can't/won't update, and it also won't allow me to do anything with activation (it thinks I'm not connected to the internet, but I can use internet explorer just fine. I've tried using the sfc /scannow command, and it finds corrupt files but can't replace them (happens in safe mode as well). Dism will run, but nothing is fixed.

i wanted to go into device manager to attempt to just reinstall all of the drivers for my hardware in case something just got screwed up, but I keep getting the message that "an administrator has blocked access to this app..." even after using the command prompt to make sure my account had admin privileges. So no luck there.

I'm kind of out of troubleshooting ideas, as simply reinstalling Windows on any hard drive puts me back in the same place. Any input would be appreciated.

@dalchina, I ran the tools you recommended. I can post copies of the results, but both CrystalDiskInfo and Macrorit found absolutely no problems with my hard drive.

I tested my RAM with the Windows memory diagnostic tool, which came back with no errors. My RAM is all consistent type, and I'm only using one stick (8GB) at the moment while I troubleshoot these problems (though I have used the memory diagnostic tool on all the RAM I have, just to make sure it all works). I also ran Intel's processor diagnostic, and my processor passed that.

My PC (CPU and GPU) has been overclocked, but I reset everything to default prior to the clean install of Windows. I will note that the overclock I did was very, VERY minimal. I removed my GPU prior to reinstalling Windows as well, and I have not put it back in since.

Windows wasn't originally supplied for my PC as I built it. I purchased a license via Microsoft's store.
@alphanumeric, I got my ISO from Microsoft's website:
https://www.microsoft.com/en-us/soft...load/windows10

I will note that, interestingly, in the process of restarting my computer over and over again, my start menu and search bar now "work" (they actually do something when I click them, though the search tool isn't really working). Going to go down the route of troubleshooting Windows, but any additional input would still be appreciated.

@AddRAM, it's a Samsung 960 EVO NVMe SSD, and it's about a month and a half old. I don't think it's an issue with the drive, as I attempted the same Windows installation on a brand new hard drive and had the same problems (also tried troubleshooting the second drive as well).

@alphanumeric, I re-downloaded the ISO and ran the installation off a few different USBs to make sure that wasn't the issue (I wanted to before I started looking at potential hardware problems).