NEED HELP! Getting BSOD (code=0xC000021A.)

[Splitdead]

Well it was fine a couple of days ago when after windows update[yeah THE update] my desktop started acting wierd.
One week ago it was faster than it ever had been😀 but day before yesterday,it was slower than it ever had been before.Until i got the stop code during boot- Inaccessible-boot-device i read about it and did this-
https://www.windowscentral.com/how-fix-update-causing-inaccessible-boot-device-error-windows-10
It was helpful because now i don't get Inaccessible boot device but get stop code 0xC000021A instead.I am able to boot into windows though through the startup settings set to 'disable driver signature enforcement'.Now i can boot through that but not directly, please suggest a solution.Any help would be appriciated.
PS :-sfc /scannow wont work says some service cant start
PPS :-can i try this:-http://www.tomshardware.com/forum/id-3573087/bsod-code-0xc000021a.html (thomasz answer)

 

[viveknayyar007]

Hello Splitdead

Can you please confirm if you can Boot in Safe Mode?

Also, can you please try to Restore Windows to an Earlier Date, i.e. somewhere to day before yesterday, when your desktop worked fine?

Feel free to report back with the results for any further assistance.

Cheers!!

 

[Ralston18]

Also, once booted you can use Task Manager, Resource Monitor, and Performance Monitor to observe what is running and what your system's resources are doing.

Some process or service is buggy or disabled. Maybe some resource is being overwhelmed.

Also, FYI. Please do not use PM's. Keep postings within your thread. Thanks.

 

[Splitdead]

Well i can't boot into safe mode but can boot with startup settings>'disable driver signature enforcement'.And unfortunately i dont have any restore points.Thanks anyways and tell me what should i do now.Also,there are not much people on the thread so can you please inform your friends if they know anything.

 

[viveknayyar007]

Well i can't boot into safe mode but can boot with startup settings>'disable driver signature enforcement'.And unfortunately i dont have any restore points.Thanks anyways and tell me what should i do now.Also,there are not much people on the thread so can you please inform your friends if they know anything.

Hello again Splitdead

It looks like one or more unsigned drivers are culprit. Can you please try running the SIGVERIF command from the Cortana search box, note all the unsigned drivers, remove them manually, and see if you can boot Windows normally?

If so, you can download and install the digitally singed drivers for those devices, and things should work fine.

Cheers!!

 

[Splitdead]

Well i can't boot into safe mode but can boot with startup settings>'disable driver signature enforcement'.And unfortunately i dont have any restore points.Thanks anyways and tell me what should i do now.Also,there are not much people on the thread so can you please inform your friends if they know anything.

Hello again Splitdead

It looks like one or more unsigned drivers are culprit. Can you please try running the SIGVERIF command from the Cortana search box, note all the unsigned drivers, remove them manually, and see if you can boot Windows normally?

If so, you can download and install the digitally singed drivers for those devices, and things should work fine.

Cheers!!

Well thanks for that but theres only one unsigned driver- basicrender.sys.
What and how should i do?

 

[viveknayyar007]

Well i can't boot into safe mode but can boot with startup settings>'disable driver signature enforcement'.And unfortunately i dont have any restore points.Thanks anyways and tell me what should i do now.Also,there are not much people on the thread so can you please inform your friends if they know anything.

Hello again Splitdead

It looks like one or more unsigned drivers are culprit. Can you please try running the SIGVERIF command from the Cortana search box, note all the unsigned drivers, remove them manually, and see if you can boot Windows normally?

If so, you can download and install the digitally singed drivers for those devices, and things should work fine.

Cheers!!

Well thanks for that but theres only one unsigned driver- basicrender.sys.
What and how should i do?

Hello again

This is what I found one of the third-party blogs:

"Default Behavior

BasicRender is a kernel device driver. In Windows 10 it is starting at Kernel initialization. If BasicRender fails to load or initialize, Windows 10 start up proceeds without warnings. However the error details are being logged.
Restore Default Startup Configuration for BasicRender
1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config BasicRender start= system
sc start BasicRender

3. Close the command window and restart the computer.

The BasicRender service is using the BasicRender.sys file that is located in the %WinDir%\System32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media."

However, before you go through all that lengthy process, can you please try Disabling Fast Boot in Your Windows and see if that works?

Cheers!!

 

[Splitdead]

Well i can't boot into safe mode but can boot with startup settings>'disable driver signature enforcement'.And unfortunately i dont have any restore points.Thanks anyways and tell me what should i do now.Also,there are not much people on the thread so can you please inform your friends if they know anything.

Hello again Splitdead

It looks like one or more unsigned drivers are culprit. Can you please try running the SIGVERIF command from the Cortana search box, note all the unsigned drivers, remove them manually, and see if you can boot Windows normally?

If so, you can download and install the digitally singed drivers for those devices, and things should work fine.

Cheers!!

Well thanks for that but theres only one unsigned driver- basicrender.sys.
What and how should i do?

Hello again

This is what I found one of the third-party blogs:

"Default Behavior

BasicRender is a kernel device driver. In Windows 10 it is starting at Kernel initialization. If BasicRender fails to load or initialize, Windows 10 start up proceeds without warnings. However the error details are being logged.
Restore Default Startup Configuration for BasicRender
1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config BasicRender start= system
sc start BasicRender

3. Close the command window and restart the computer.

The BasicRender service is using the BasicRender.sys file that is located in the %WinDir%\System32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media."

However, before you go through all that lengthy process, can you please try Disabling Fast Boot in Your Windows and see if that works?

Cheers!!

OK i will tell you the results exactly half an hour later as i am backing up data and cant do it now

 

[Splitdead]

Sorry man i got late!
But its not working the second command says-

C:\WINDOWS\system32>sc start BasicRender
[SC] StartService FAILED 1056:

An instance of the service is already running.

And also here is log file for BSOD.

Startup Repair diagnosis and repair log
---------------------------
Last successful boot time: ‎11/‎26/‎2017 6:51:18 AM (GMT)
Number of repair attempts: 1

Session details
---------------------------
System Disk = \Device\Harddisk0
Windows directory = F:\WINDOWS
AutoChk Run = 0
Number of root causes = 1

Test Performed:
---------------------------
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 359 ms

Test Performed:
---------------------------
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 47 ms

Test Performed:
---------------------------
Name: Target OS test
Result: Completed successfully. Error code = 0x0
Time taken = 78 ms

Test Performed:
---------------------------
Name: Volume content check
Result: Completed successfully. Error code = 0x0
Time taken = 10485 ms

Test Performed:
---------------------------
Name: Boot manager diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: System boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Event log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 359 ms

Test Performed:
---------------------------
Name: Internal state check
Result: Completed successfully. Error code = 0x0
Time taken = 31 ms

Test Performed:
---------------------------
Name: Check for pending package install
Result: Completed successfully. Error code = 0x0
Time taken = 5172 ms

Test Performed:
---------------------------
Name: Boot status test
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms

Test Performed:
---------------------------
Name: Setup state check
Result: Completed successfully. Error code = 0x0
Time taken = 187 ms

Test Performed:
---------------------------
Name: Registry hives test
Result: Completed successfully. Error code = 0x0
Time taken = 1422 ms

Test Performed:
---------------------------
Name: Windows boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Bugcheck analysis
Result: Completed successfully. Error code = 0x0
Time taken = 360 ms

Root cause found:
---------------------------
Bugcheck c000021a. Parameters = 0xffffa78db8d84620, 0xffffffffc0000428, 0x0, 0x1da8e2e0000.
Boot critical file is corrupt.

Repair action: File repair
Result: Failed. Error code = 0x2
Time taken = 3328 ms

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