GPU always crashing

i haven't overclocked anything on this pc and how do i bump the voltage up? The card came from EVGA and I had to RMA a previous one last week because it had a similar problem but then it stopped working and the pc would restart on boot unless it was in safe mode and even then anything dark would be reddish with red lines all over the screen. I rma'ed that card and the replacement they sent me is the current one which has the problems i described in the first post pretty much the same day I got it.

I have had the intel hd graphics crash one one specific game on one specific setting so i think thats not anything to do with this ill have to try to get an advanced rma

I have two updates, I received two bsods playing amnesia today and here are the two dump reports first is
http://gyazo.com/4760f2afece87f188cca74b02c607111
On Tue 9/10/2013 10:28:50 PM GMT your computer crashed
crash dump file: C:\Windows\Minidump\091013-29468-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x75B80)
Bugcheck code: 0xC4 (0x91, 0x2, 0xFFFFFA800A87FB50, 0x0)
Error: DRIVER_VERIFIER_DETECTED_VIOLATION
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This is the general bug check code for fatal errors found by Driver Verifier.
The driver switched stacks using a method that is not supported by the operating system. The only supported way to extend a kernel mode stack is by using KeExpandKernelStackAndCallout. This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.

the second is
http://gyazo.com/99dd12eb537d340dae2db506f9a87e2a
On Tue 9/10/2013 8:14:01 PM GMT your computer crashed
crash dump file: C:\Windows\Minidump\091013-29686-01.dmp
This was probably caused by the following module: win32k.sys (win32k+0xC639D)
Bugcheck code: 0x19 (0x3, 0xFFFFF900C0139260, 0xFF000000FF000000, 0xFFFFF900C0139260)
Error: BAD_POOL_HEADER
file path: C:\Windows\system32\win32k.sys
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: Multi-User Win32 Driver
Bug check description: This indicates that a pool header is corrupt.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. This might be a case of memory corruption. More often memory corruption happens because of software errors in buggy drivers, not because of faulty RAM modules.
The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system that cannot be identified at this time.

yea it was while streaming the new amnesia game. And i installed it after i built everything in it now except at the time i had a gtx 570 then i upgraded to the 660 ti and now im using the integrated

ok i did that, when i booted with the gpu in, i got a lot of green lines on the screen almost like a bar code covering the screen, then in installed the nvidia driver and it would not start windows on reboot

I'm not going to be able to test it in another computer for a while since im getting ready to move into a dorm room and i dont have time to go to a computer shop. I guess ill try to rma it for the third time.