MBP Random Black out Screen [ONLY ONLINE]

Hello everyone,
My Macbook Pro Early 2011 15 inch i7 with 8GB RAM at the moment is experiencing some trouble. When I'm watching videos online, the screen goes black after a few minutes. I know that the Early 2011 are famous because of faulty Logic Boards, but I don't know how to make the Hardware test without the disk.
And also, this problem started when I updated from Mountain Lion to Mavericks. When the blackscreen started, I rebooted the PRAM and SMC, but sometimes it didn't do the trick, and It stayed for hours to the system booted. After I Downgraded from Mavericks to Mountain Lion, this issue didn't happen for 3 or 4 complete days, and it happened again now in Mountain Lion. So, Hardware or Software issue?
Well to summarize:
PROBLEM: Blackscreen only when watching videos or anything flash format on the internet.
SYMPTOMS:
Blackscreen Only Online When Watching videos that are in flash format, or any page that has something inside of it that has flash format (Example: Simulators Online).
Not rebooting: Persistent Blue Screen or No Safe Mode booting or After PRAM or SMC Rebooting no booting.
QUESTION: Hardware (Logic Board) or Software Issue?

You have the problem as found in this -> https://discussions.apple.com/thread/4766577?tstart=0 - thread. Give it a glance and you'll see that many others are having the same problem with 2011 15" and 17" MacBook Pros. Basically, the solder on your GPU to logic board has cracked. In the end, you won't be able to boot at all (if you've not already reached that point).
Some people have been lucky enough to get a free logic board replacement. Unfortunately, many people have also gone through 3-4 logic boards and the problem is never solved. A replacement logic board is not a 'fix.' The only fix that seems to last any time is a BGA reball of your GPU. Lot of those repair shops around the world - make sure that you choose one who has at least a one year warranty. There is a list on Facebook of reballers across the globe -> http://on.fb.me/WaxddM.
Good luck,
Clinton
MacBook Pro (15-inch Late 2011), OS Mavericks 10.9.4, 16GB Crucial RAM, Crucial M500 960GB SSD, 27” Apple Thunderbolt Display

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Figure 1:
Figure 2:
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