Windows 7 display errors + BSOD's

Hello guys, 1st time posting about the problems with my computer.
So I have 2 problems at the moment, the major problem being, I often get BSOD when I turn off my PC.

Ok when my computer blue screens, it gives my this error code

"Technical Information:"

*** STOP: 0x0000007E

In the past I have also had other codes and other "bug check string" (idk what that is), for example

Bug Check String : SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
Bug Check Code : 0x1000007e

Bug Check String : CRITICAL_OBJECT_TERMINATION
Bug Check Code : 0x000000f4

Bug Check String : DRIVER_OVERRAN_STACK_BUFFER
Bug Check Code : 0x000000f7

Bug Check String : KMODE_EXCEPTION_NOT_HANDLED
Bug Check Code : 0x0000001e

Bug Check String : DRIVER_POWER_STATE_FAILURE
Bug Check Code : 0x1000009f

Bug Check String :
Bug Check Code : 0x00000116

Here is 1 picture I managed to get on my phone when it happened https://prnt.sc/fjbwxv
(sorry for the bad quality, photography)

These different errors have occurred over 2-3 years, they used to happen daily but now they only happen maybe once a week and the Majority of them are the SYSTEM_THREAD_EXCEPTION_NOT_HANDLED Error.


Any help on this would be greatly appreciated as I do not know much about computers


Now then the display issues i have seems to be a little complicated, so a while back after i turned my PC on 1 day, after it had been playing up with the (Not Responding) rubbish, a lot of the displays suddenly seemed a lot worse and different, so the windows taskbar looks like it isn't rendering properly, this problem also happens with internet web pages too.

As you can see here, the "minimise, restore down and close" are not rendering properly https://prnt.sc/fjbz6j

This is the taskbar : https://prnt.sc/fjc0if

I would like to point out that i still get (Not responding) Regularly on web pages and i also get it on background programs that are always running such as Nvidia control panel/Nvidia Geforce Experience.

My computer usually takes atleast 2+ minutes just to load up the desktop after i have logged on, Bearing in mind this was a £650 gaming pc.

Now my Windows update will not work either, it wont install the update and it will not cancel the installation,
This was after i clicked "stop installation"... :/ https://prnt.sc/fjc833

If somebody could help me out with this issue that would be fantastic, Thanks again guys.


Quick edit: Sorry i forgot to post some PC details, so im using Windows 7 home premium, Processor : AMD FX(tm)-6350 Six-Core Processor 3.90GHz
64bit operating system
GeForce GTX 660 - Fully up to date.
Also I am using Windows internet Explorer.