I don't like to suggest registry cleaners to people but I suppose removing Flash then running the CCleaner registry cleaner might help - re-install Flash afterwards obviously.
Did you check in Firefox Add Ons to make sure that Flash Player is enabled either by default or by asking?
And, I tried older version of flash, with FF 48(newest v.), same thing. I was looking at pcmag review of FF48, & he said that was the biggest change since the last version? The portable just runs as a file from where you've saved it, rather than it being installed which is more integrated. I assume you've run without Firefox extensions, open with shift key held down or add -safe-mode to the shortcut (one space before the first minus sign).
I had some problems recently with Flash content (graphic ads) swamping Firefox and either lowing, freezing, or crashing it.
I set Flash Player to always ask and the problem disappeared.
Can't play games on facebook, can't watch videos(except youtube, as they use HTML), or anything else. Note also that Moz Backup is no longer supported so it might backfire on newer Firefox versions. But, just now I saw 'turn off hardware acceleration'.
I have not been able to access anything with flash content. Try Flash before restoring with Moz Backup in case there is something in there that it doesn't like.
Hi, Derek, I think I did try that before, starting FF in safe mode, but I just tried again, and Facebook games still doesn't play. Hi, Derek, been busy, so, sorry didn't answer till now. Also, the other day, someone on a chat site I visit was saying that the prob could lie with the 64 bit version of FF.
Then I tried FF 46 with latest current flash, no dice, except for I can watch some videos on facebook now, which I don't think I could do before. the ones which seem like it may be the cause, but didn't help. I know that I cannot update my graphics driver, and cannot get a new video card, as it is connected to the motherboard. Just curious, have you tried a portable version of Firefox (you can install it on a USB drive and keep your "hard-disk" version as well): You may have to uninstall/reinstall flash again if you try this version.... You could also try Firefox Refresh if you haven't already:https://support.mozilla.org/en-US/k...
Oh, and, BTW, this is a very new motherboard, from 2/16, as my old one died. Mighty strange this because many folk including me are running Flash with Firefox.
I can enable it for a page but the junk ads that over use it no longer come up and my problems with it were solved. You would obviously have to keep Flash running, so rather than starting Firefox without extensions try disabling all extension and plug-ins except Flash (if you haven't already).
Try running Malwarebytes, Adwcleaner, and JRT - junkware removal tool to make sure some of the junk is not affecting Flash & FF. ADWCleaner (already given) is particularly good at unearthing browser malware. It is usually safe to run the Scan followed by the Clean.