Windows 10: Is it a bad disk, or a .NET Framework issue? Desperate for an answer

I've got a puzzle here and am hoping someone from this hive mind can help. I don't know what else to try, and without an answer I have a pretty major problem. Hopefully this is all the info you might need...

PLATFORM: Dell Latitude 5591 2.5 years old running Windows 10 Pro, which is up to date v 20H2. Not much software installed beyond that, but I'll list it all at the end of the post.

SYMPTOMS:
Starting a few months back, around October or so:
--Occasional message in the Windows notification window recommending I use CHKDSK to resolve disk errors
--I would do CHKDSK /r via elevated CMD, runs on next restart.
--Problem dispppears for a few days. CHKDSK report appears clean in Event Viewer.
--Problem returns, every few days or so. And now start getting seemingly random errors, such as:
----Epson Fax Utility tells can't run because it is either corrupt or cannot run on Windows I don't even use that
----Some Windows process I've never heard of throws an exception with no useful information
--Then the big problem - one day I go to open Quicken, and it won't open. Tried opening from different icon locations, tried restart, even uninstalled and resintalled the software - same result: double-click, it acts like it's chomping for a second, then nothing. No process in Task Manager. No sign it is running at all.
--The same time this happens, also noticed that iDrive for automated backups hasn't been running in days either.
--This narrowed me down to a .NET Framework issue. So I downloaded and ran the Microsoft .NET Repair Tool and run it. Result: found problems it cannot fix "The tool is unable to resolve the installation issue...", sends the reports to Microsoft. Not real helpful. CBS log has a bazillion lines in it and I can't tell what is what, but there are no ERROR lines.
--Tried downloading and running a freeware tool called the .NET Cleanup Tool. It runs. No change. Doesn't seem to do anything.
--Tried to run SFC /scannow, which completes it's verification to 100%, then tells me there are errors it cannot fix.
--Tried DISM Online, Cleanup-Image, Restorehealth, and it tells me it doesn't even recognize the "Cleanup-Image" command. Error 87. Over and over.
--Tried to uncheck the .NET Framework v4.8 for me - only version running in Windows Features, restarted, started MS Word. Didn't work. Then re-checked the box, restarted, then opened MS Word - still doesn't work.
--Since I clearly could not fix .NET, I tried a Windows Repair. Long story short the corruption was bad enough that I couldn't do the version that kept my apps, or my files, or anything else. Had to do a clean install from ISO USB, then download all my personal files from the iDrive site which took like 2 days, reloaded software, etc.
--THIS SEEMED TO WORK FOR ABOUT 2-3 WEEKS

Then the cycle started all over again in the last week. Disk warnings, then random errors on startup, then couldn't run anything that uses .NET Framework. And now here I am, again! CHKDSK says no issues. The only GOOD NEWS this time is, at least on the software side, I think I can narrow down the likely culprit a bit. iDrive uses .NET Framework, and it ran successfully on the morning of the 14th last Windows update was a few days before this, security fixes, not .NET. Since that time, the ONLY software I have used actively is Microsoft Word which now doesn't work either!!!, Windows Explorer, and Firefox. And in the background, the only 3rd party software running are Malwarebytes my prime suspect, some Epson software for the printer, and iDrive.

HERE IS MY DILEMMA: This seems to be one of two possible things. Either some software is causing corruption to the .NET Framework, or, the HDD is corrupted in some way. In other words, is it software or hardware? Without being able to tell which it is, I can't tell what to do next! Anyone have any advice? If it is the disk then I'll buy a new one and reload, but if it turns out it was software, then I just blew time and money because the problem will return when I reload and use the software. If it IS a software issue, how can I tell what software is the culprit? Any help is appreciated!

FOR THE RECORD, here are ALL the third party software packages I installed on this laptop, when they were last used if at all, etc.:
--MS Office 2016 used almost daily since Windows install a month ago
--Firefox browser also used pretty much daily
--Malwarebytes runs in background of course, but now won't open or run at all
--iDrive runs in background and daily backup - last run 1/14 early AM cleanly, failed to run on 15th
--Quicken 2020 last used on the 11th, used weekly-ish
--Epson recommended software for use with the XP-810 printer I have
--Adobe Acrobat Reader haven't opened a PDF in a week or two
--MusicBee haven't used in weeks
--Google Earth haven't used at all

That's all I have added to this computer. I appreciate any advice or help! Thank you!

:)

 

Microsoft .NET Framework, Unhandled exception

Hi,

Welcome to Microsoft Community.

I suggest you to un-check and recheck .Net framework 3.5 and .Net framework 4.6 advance series from Windows features.

Try the following steps:

• Press Windows + R keys to open Run command.
• Type Appwiz.cpl and select "turn Windows feature on or off" from the left
• Uncheck .Net framework 3.5 and .Net framework 4.6 advance series.
• Restart the computer
• Repeat step 1 and 2 and check .Net framework 3.5 and .Net framework 4.6 advance series.
• Restart the computer.

Regards,

 

Microsoft .NET Framework, Unhandled exception

no, problem is still actual for me.

have MSI Notebook, problem is

System.MissingFieldException: Field not found: 'WPFOSD.GraphicsSwitchWnd.VGAType'.

at MSI.SCM.SCMII.WMIEventMath(Int32 WMIEvent), after i make something by S-BAR buttons like adding volume or something like that.

 

.NET Framework 1.0 updates install every day

Hi,

Thank you for posting the query on Microsoft Community.

I appreciate your interest on windows 10.

The issue might occur if there is any corruption during windows update.I will certainly help you with the issue.

I suggest you to follow the methods below:

Method 1 I suggest you to run Windows Update Troubleshooter.

Follow the below steps:

Type troubleshooting in the search bar.

• Select Troubleshooting.
• Select View all on the top left corner.
• Click on windows update.
• Follow the on-screen instructions to run the troubleshooter.

Method 2 I also suggest you to uncheck the
.NET Framework 1.0 and restart the computer and check if issue persists,

Please follow the steps below:

• 
  Right click on start menu and click on programs and features.
  
• 
  Click Turn windows features on or off.
  
• 
  Uncheck .NET Framework 1.0 and .NET Framework services.
  
• 
  Click on ok.
  

Once, you have unchecked these, Please restart your computer and recheck
the .NET Framework 1.0 and .NET Framework services andcheck.

Please get back to us with updated status, we will be happy to assist you.