Windows 10: BSOD during boot up, Bugcheck c000021a

Hello everyone.
If you want to know system specs of a laptop, you can take a look at my profile.
Today, I got this laptop from a friend who told me that it is running slowly. And it was actually extremely slow running. I was then searching for a potential problem when I realized that there is a "checking for updates" loop in Windows Update, which I was trying to solve.

• First thing I've done was setting up a clean boot and eventually sfc /scannow in safe mode with command prompt. The result: corrupt files were fixed successfully. Restart
• Now, another problem I'm facing now is BSOD during boot, error 0x000021a. The only way I can boot into fully-operating system is to go to advanced startup options and choose option number 7 - Disable driver signature enforcement.
• After "normal" boot up, I ran a DISM checkhealth, scanhealth which told me that there were not any errors or corrupted files.
• Because there is a problem with Windows update, I followed the steps from here and ran the .bat file, now I see the date when the last check of updates has been running but I haven't pressed the "check for updates" button yet.
• I've tried to update drivers from Lenovo website but it seems that it doesn't resolve the problem. Although the computer runs pretty fast now, I think it is due to the fact that I'm working in a clean boot environment.
• Lenovo Solution Center also can't execute the hardware scan, I just get the orange window with white exclamation mark, but without any text or reference.

I would like to ask you to help me to figure out what is the actual problem. Before I removed the history of windows update I saw that one of the last installation was update of AMD graphics drivers, which was failed, so I think it could be the major problem here.
I ran sfc /scannow again right now, I got the same result like the first time. Corrupt files, fixed with success.
Thank you very much.

:)

 

Two graphic arts programs that worked in Windows 8 and 10, no longer work after Windows 10 Build 1607 64-bit update

I tried the compatibility testing and they are both listed as incompatible products with no other error details. I am unable to install a previous build because it is past the time when that build was available. I also tried the available restore points
but they failed due to what the SrtTrail log stated as a:

Root cause found:

---------------------------

Bugcheck c000021a. Parameters = 0xffffd385771c1900, 0xffffffffc0000428, 0x0, 0x17bb0d10000.

Boot critical file is corrupt.

 

Windows 10 continously cycles around

I am having trouble with my Window10 laptop,

It keeps on reporting stop code of 0xC000021A failure.

Automatic repair doesn't work. Reset the PC also doesn't work.

When I look into the file C:/Windows/System32/Logfiles/SrtTrail.txt it says

Startup Repair has tried several times but still cannot determine the cause of the problem

Session Details

System disk = /Device/Harddisk0

Windows directory = C:/Windows

AutoChk Run =

Number of Root Causes = 1

Also

Test Performed

---------------------

Name: Bugcheck analyis

Result : Completed Successfully Error Code = 0x0

Time Take = 593ms

Root Cause found:

----------------------------

Bugcheck c000021a. Parameters = 0xffffd000d82778d0, 0xffffffffc0000006, 0xffffd000d80d1470, 0x0.

Boot critical file is corrupt.

I have also tried to create a boot media however I am not able to get windows to run from the boot media as it seems as I am not able to re-install windows.

 

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