Crashes/BSOD mainly when not in use overnight  

On the original and the recent fresh install we used Snappy then finished with windows update installing whatever drivers it found.
Attachment 324001

I would click Update in Snail & test.

Has Unknown changed?

I let snail update the drivers and windows found a new device. I rebooted and device manager still shows that unknown device in other. I uninstalled the unknown device from device manager and did a reboot and checked snail again for new drivers. The unknown did not return.

Another way to check drivers & evaluate/test, if needed.

AMD Driver Autodetect
https://www.amd.com/en/support

AMD Cleanup Utility
https://www.amd.com/en/support/kb/faq/gpu-601

Intel Driver & Support Assistant (former Intel Driver Update Utility)
Download Intel Driver & Support Assistant 21.1.5.2
Download Intel(R) Driver & Support Assistant

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Many, many errors in your Farbar logs, but they may stem from this one.
"The Master File Table (MFT) contains a corrupted file record"

Step 1: Run Malwarebytes Anti-Malware ( MBAM ) Use Threat Scan. Make sure Rootkit scan is on.
Download Malwarebytes 4.3.0.210
Malwarebytes Anti-Malware 4.3.0.210 Free Download - FreewareFiles.com - Security/Privacy Category
Malwarebytes Anti-Malware 4.3.0.210 Screenshot - Freeware Files.com
Malwarebytes Cybersecurity for Home and Business | Malwarebytes
Forum
Forums - Malwarebytes Forums
FAQ - Malwarebytes won't run or failed to resolve my issues
https://forums.malwarebytes.com/topi...lve-my-issues/
Scanning, you will get something like this.
https://i.imgur.com/4NZ5Qw0.gif
https://i.imgur.com/rRfr1oD.gif
https://i.imgur.com/tShE6tQ.gif
https://i.imgur.com/iJZHDC0.gif
After a restart ( if required ) Copy & Paste the contents of the scan into your reply.
If too large, upload to a site of your choosing.
Follow these directions, until you get to Export.
https://support.malwarebytes.com/hc/...s/360038479194

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The scan was running for several hours so I left it overnight. When I returned to check if it had finished the system had crashed at some point and rebooted. I am unsure if the scan finished but I did find a log from overnight. The contents are below. I don't think that was my original scan as it shows rootkits as disabled. I will try running it again.
The E: in this system is an older 2TB mechanical drive that shows good SMART in HDD sentinel. It has data going back at least a decade. I'm wondering if it is failing or has a corrupt file on it.

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 3/22/21
Scan Time: 2:25 AM
Log File: 6612824d-8ad7-11eb-ab7f-509a4c1eb253.json

-Software Information-
Version: 4.3.0.98
Components Version: 1.0.1173
Update Package Version: 1.0.38505
License: Trial

-System Information-
OS: Windows 10 (Build 19042.870)
CPU: x64
File System: NTFS
User: System

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Scheduler
Result: Completed
Objects Scanned: 270185
Threats Detected: 0
Threats Quarantined: 0
Time Elapsed: 1 min, 32 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 0
(No malicious items detected)

Registry Value: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 0
(No malicious items detected)

File: 0
(No malicious items detected)

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

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What would be causing the MFT errors on the C: drive? That is a brand new drive from when we refurbished the machine.

Step 2: Please download Dr.Web CureIt and save it to your Desktop. DO NOT perform a scan, until you get it on your desktop. If your default download location is not the <b>Desktop</b>, drag it out of it's location onto the Desktop. (If this is not possible, this program is portable, and runs right from the location it is downloaded to, like a USB drive or SD card.)
Download Dr.WEB CureIt! March 21, 2021
Download Dr.Web CureIt 12.0.201906240 for Windows - Filehippo.com
Dr.Web CureIt! - Healing utility
Dr.Web CureIt! - Healing utility
ftp://ftp.drweb.com/pub/drweb/cureit/drweb-cureit.exe
Documentation
http://download.geo.drweb.com/pub/dr...it-free-en.pdf
Copy & Paste the contents of the log into a text file & upload it to File Convoy.
No time delays/Captcha-I'm not a Robot/account/registration needed. Give us the link please.
Free file sharing without registration and size limits
https://i.imgur.com/7UiiqWr.gif
https://i.imgur.com/6N1gfOj.gif

Step 3: How to Repair Corrupted Windows System Files with the SFC and DISM Commands
How to Repair Corrupted Windows System Files with the SFC and DISM Commands
Using DISM and SFC in Windows 10 to Repair System Files
http://alex.zheng-dynasty.com/2016/0...-system-files/
How to Repair System Files with SFC Command in Windows 10
Run SFC Command in Windows 10

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"What would be causing the MFT errors on the C: drive? That is a brand new drive from when we refurbished the machine"
https://www.partitionwizard.com/disk...ile-table.html

I ran Malwarebytes again and it found 4 threat files on the storage drive and removed them. CureIT found nothing. Here are the links to that scan log and the CureIT log:
scan2.txt - Google Drive
cureit.log - Google Drive

Here is the CBS log after running SFC:
CBS.log - Google Drive

Step 4: MFT (Master File Table) is corrupted.
TestDisk Download
TestDisk Download - CGSecurity
Advanced NTFS Boot and MFT Repair
Advanced NTFS Boot and MFT Repair - CGSecurity

This turned out to be defective ram. It never failed memtest but we swapped it out for other memory and the problem went away.

Nice work, best way to swap.