Windows 10: Desktop is still Flickering after all solutions.

A bit of a background (I'm not sure if this helps):
I upgraded to Windows 10 last year. Found some annoying bugs with the apps but, overall, the OS worked fine I encountered no problems. I decided to go back to Windows 8.1 since the buggy apps annoyed me.
Just yesterday, I decided to go back and re-upgrade to Windows 10. First thing that happened is that explorer.exe kept refreshing causing this flickering taskbar.

I decided to use the other account on the same laptop. It worked. So maybe, only the other account was corrupted? I am not sure. So I used this account to search the solutions.

I searched for the whole day yesterday and did all the solutions from others. I removed my antiviruses, anything Apple, IDT Audio, and did my scans, and tampered with services. I did everything on this site said:
http://answers.microsoft.com/en-us/w...fe525e6?auth=1

with
what Srinidhi Arekal said. I tried it all except the Norton parts. I didn't have any Norton.

Right now, I checked event viewer. I saw this. searched for it but can't find any solutions to it. Any ideas?

Faulting application name: explorer.exe, version: 10.0.10586.306, time stamp: 0x571af645
Faulting module name: wpncore.dll, version: 10.0.10586.17, time stamp: 0x56518abb
Exception code: 0xc0000409
Fault offset: 0x000000000002a886
Faulting process id: 0xbf8
Faulting application start time: 0x01d1c1e0ae8df2ed
Faulting application path: C:\WINDOWS\explorer.exe
Faulting module path: C:\WINDOWS\System32\wpncore.dll
Report Id: 926e7291-5d90-4913-8358-e8e1597a0dde
Faulting package full name:
Faulting package-relative application ID:

:)

 

Display flickering in Windows 10

I have Lenovo Y50-70 Laptop, At the time of startup when Windows 10 logo screen opens, after log in to Windows 10 logo screen the screen starts flickering on and on still the main desktop screen appears... Flickering still going on.... I updated display
drivers in Device Manager... But this isn't resolve my issues..even Lenovo changed the display of my laptop... Still the flickering persists.... Is this any hardware issue or Operating system issue? Give me any solution....

 

Windows 10 Taskbar and Desktop Constantly Refreshing

My issue seemed to be caused by Norton antivirus. They have a solution guide here:

"My desktop screen flickers after I upgrade my Norton product"

Fix for Desktop Screen Flickers after upgrading Norton product