I have searched similar issues posted on the community but did not see a fix or they linked to an out of date page or similar but not exact same issue.
Early MacBook Pro 2011 suddenly having an issue where the screen will go black then come back on and off again intermittently, could be off for half a second or 5 secs then come back on for random period of time then of again.
Seems to be happening when the computer has been on for while and getting hot, especially when I'm using it for video chatting programs (Not Skype BTW). Note; when it happens I can still hear the other person and they can hear me, I just cannot see the screen.
So far it has only gone black for very short periods of time, no more than 10 seconds.
When the screen goes black I shined a torch and you cannot see anything.
It happened one time when I was typing; the screen went black and then back on every time I hit a key to type a sentence.
One time I noticed tapping the laptop screen on the top or tapping above the keyboard was also making it go black then it would come back on.
I tried tapping in the same places since then and it's not happening anymore, although as mentioned it only seems to happen mostly when the computer has been on for a long time, running my video chat seems to really set it off (I teach English online) so connect to people via internet.
I recently installed BitDefender and that is the only thing I can think that I has changed recently.
My hard-drive had been getting close the full and the laptop was running hot for long periods of time because I use it both for work and entertainment.
I have tried shutting of the ADMRadeon GPU Chip but that didn't fix it.
I have done the SMC NVRAM resets.
I have done full Apple Hardware test and it says nothing is wrong.
I have wiped the HD and reinstalled clean operating System (NO time machine) and only re-installed 3rd party *apps I use for work + Bitdifender and Google Chrome.
*I have been doing the same work for several months and the problem only started in the last week.
One program is called VidyoConnect and the other program is run in browser and can used Flash or sometimes HTML5 I think (the company is phasing out Flash)
macOS High Sierra 10.13.6
Macbook Pro (15-inch, Early 2011)
Processor 2GHz Intel Core i7
Memory 8GB 1333 MHz DDR3
Graphics Intel HD Graphics 3000 512 MB
325GB available of 416GB
Help is so appreciated because I don't have the money to buy a new laptop right now and I already called my local Mac repair stores and they admitted they have no clue about this problem. I really need to keep this baby going for work for a bit longer!!!