MacBook Pro keeps crashing - need help

Hi everyone,

My MacBook Pro recently started to crash every now and then and I'm trying to figure out why. Would rather not have to buy a new one, so I hope someone can help me determine if it's something that's fixable.

Here's some information about my MacBook Pro:

MacBook Pro 15-inch, late 2011 (MacBookPro8,2)

2.2 GHz Intel Core i7

8 GB 1333 MHz DDR3 (2x4GB banks)

AMD Radeon HD 6750M 512 MB

Intel HD Graphics 3000 512 MB

I ran a hardware check (right after booting up) and it reported no problems.

The system (seemingly) randomly crashes every now and then. Below is a picture of what I see right when that happens (it also flickers a bit). After a while like this, it will eventually reboot.

I went to the console (/var/log) and checked the DiagnosticMessages section. At the time of the crash there seems to have been some issue with the graphics card if I'm interpreting this correctly?

Does anyone know what's going on?

These are the two entries:

1.

DumpGPURestart

Subsystem: com.apple.crashreporter.writereport.gpuRestart

com.apple.message.domain: com.apple.crashreporter.writereport.gpuRestart

com.apple.message.signature: Kernel

com.apple.message.signature2: UNBUNDLED ||| kernel ((null))

com.apple.message.signature3: UNKNOWN

com.apple.message.result: noop

com.apple.message.summarize: YES

SenderMachUUID: 1370AAB0-B8CE-3E2D-8124-066AD170330A

2.

SystemUIServer

Subsystem: com.apple.ioacceleratorfamily.gpu_hang

com.apple.message.domain: com.apple.ioacceleratorfamily.gpu_hang

com.apple.message.responsible: true

com.apple.message.application_version: 462

com.apple.message.application_identifier: com.apple.systemuiserver

com.apple.message.device_name: AMD Radeon HD 6750M

SenderMachUUID: 8CF2AC4F-92D8-34A1-8276-36030158E6DD

Here's the picture: