Screen blacking out

Help/About Firefox

Bookmarks/Show All Bookmarks/Import and Backup/Export Bookmarks to HTML

The " Help/About Firefox " is what I'm looking for. I don't see it on the main page.

Perhaps you don't have the Menu Bar showing?

You're correct. I don't have a menu bar showing. I don't see where the option is to turn it on though.
oops ... I just stumbled across it. I have version 54.0.1 (32 - bit) and it says it's up to date.

I had my viewing window go black on me again today while I was watching something off of my Facebook page. In preparation I had my Task Manager Performance window running so I could check to see what was going on with my memory allocation if this happened. I captured a screen shot of it but don't see where I have a memory issue unless I'm looking at this wrong.

From the beginning of this thread, my money was on a Graphics Card problem.
If you have installed MSI Afterburner as I suggested, that will show you a lot more detail about what is actually going on.

I am also wondering if the problem is being caused by the Nvidia Driver you are currently using.
Sometimes certain drivers do not work well with particular graphics card models, especially if you are using a much older card.
Find out which exact driver you have installed now, then try installing a older driver version - go back a couple of versions...
You can look up old Nvidia Drivers using this tool here:
www.nvidia.com/Download/Find.aspx?lang=en-us
Make sure to download an older driver first, then when you un-install your current driver, you will have the next driver ready to install.
Also make sure to do a clean install, by selecting the clean install option in the installer (can't remember exactly what the option says, but you will know what I mean when you see it).



Make sure to have Afterburner set to turn on when your computer starts:



This is the Skin I use:



If none of the above bares fruit, try reading these suggestions here:
superuser.com/questions/1090394/black-screen-when-playing-video-fullscreen-in-windows-10
superuser.com/questions/807488/screen-turns-black-for-a-few-secs-while-watching-full-screen-video
superuser.com/questions/723402/black-screen-issue-playing-videos-in-youtube-on-google-chrome

Additional important information about Afterburner !

If Afterburner is not turned ON, go to program list and get it going.
It lives in bottom Windows task bar on right.



After opening the Afterburner window, always close the window by pressing - button and not x, otherwise it turns program OFF !!!

OK, Tnx Derek. I downloaded MSI Afterburnner and have it running and minimized. Waiting now for the next time the screen goes blank to see if I can pull it up and see what the parameters are.

While watching a news video off of my FaceBook page just now my screen went black again. I quickly maximized MSI Afterburnner and made a screen shot of it. Don't know what it's telling me though.

Change the skin you are using for Afterburner - I showed the best one to use in previous message.
When error occurs, you need to scroll down readouts, which will show all the various elements being affected.
If something suddenly changed, you will see a spike or drop in the graph.

Did you try rolling back your Graphics Driver as I suggested ?

If changing your Graphics Driver to an older Driver does not fix problem, it seems more and more likely that a Hardware failure is occurring in the card.
The only solution for that, is to buy a new Graphics Card or get a second hand card from eBay.
When my GTX460 died, I bought a GTX570 from someone on eBay.
I was lucky to score an extremely well looked after card from another computer enthusiast.