display driver has recovered

so after not using my pc for a long time today( was working fine 2 days prior) i have been getting intermittant display driver has recovered error where the screen goes off and comes back on after hanging for 1-2 seconds. it has also blue screened a few times and failed to boot afterwards. I've used ddu to remove the nvidia drivers and re-installed new ones/tried some older versions. the same seems to happen. The only things i've changed to potentially cause it on a software side is running ccleaner, installing IE9 (issue with skype and i never use the browser) It seems to happen mostly when attempting to play LoL but it seems random and unexpected sometimes not doing it all. I used blue screen view and have the dmp files of 2 seperate blue screens. ill upload them too see if they help.

==================================================
Dump File : 122014-36129-01.dmp
Crash Time : 20/12/2014 21:54:10
Bug Check String :
Bug Check Code : 0x00000116
Parameter 1 : fffffa80`062fc010
Parameter 2 : fffff880`0ff6b4ac
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000002
Caused By Driver : dxgkrnl.sys
Caused By Address : dxgkrnl.sys+5ccbc
File Description : DirectX Graphics Kernel
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Processor : x64
Crash Address : ntoskrnl.exe+71f00
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : D:\Windows\Minidump\122014-36129-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7600
Dump File Size : 483,512
Dump File Time : 20/12/2014 21:55:19
==================================================

==================================================
Dump File : 102712-20623-01.dmp
Crash Time : 27/10/2012 14:15:56
Bug Check String :
Bug Check Code : 0x00000116
Parameter 1 : fffffa80`069364e0
Parameter 2 : fffff880`109d7630
Parameter 3 : ffffffff`c000009a
Parameter 4 : 00000000`00000004
Caused By Driver : dxgkrnl.sys
Caused By Address : dxgkrnl.sys+5ccbc
File Description : DirectX Graphics Kernel
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Processor : x64
Crash Address : ntoskrnl.exe+71f00
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : D:\Windows\Minidump\102712-20623-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7600
Dump File Size : 680,952
Dump File Time : 27/10/2012 14:17:20
==================================================