Can anyone diagnose this problem?

I recently had a problem where my computer would beep 4 times (1 long, 3 short) and I googled on my phone and it was said to be a memory problem, so I bought new RAM thinking the ram was bust.

Bought it, changed it, no difference.. so I re-googled on my phone to see what the problem could be, and I saw about replugging in the gfx card, so I done that and it starts to work again.

But even after it's happened twice, It usually happens if I'm watching a video online in full screen or just randomly... It could start to accelerate and I'd close everything and go to my desktop and it will just black screen and restart (but not show anything on the monitor)

Also if it helps, this windows error comes up after It's happened

Code:
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 2057

Additional information about the problem:
BCCode: 116
BCP1: FFFFFA8007274010
BCP2: FFFFF88009F5F6C4
BCP3: FFFFFFFFC000009A
BCP4: 0000000000000004
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\030313-39187-01.dmp
C:\Users\****\AppData\Local\Temp\WER-123209-0.sysdata.xml

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