Recaptcha Won't Let Me In

I have been having problems for over a year getting into websites that use reCaptcha. I've tried IE 11 and Firefox (all versions). I suspect some program I have loaded is creating interference but which one. How can I find out easily?
Windows 7 64 bit operating system
Firefox 56 is my main browser
Any help will be greatly appreciated.

 

When I enter my userid and password I get a message telling me to update my browser even though it may be the latest one available.

 

I am aware of Firefox Quantum...in fact I installed it last month. After finding out that almost all my addons would not work in Quantum and I didn't like the format in general, I went back to the version of Firefox I use now. I may check out the FF ESR link. The reCaptcha problem started suddenly about a year ago and has persisted through several versions of Firefox as well as IE 11.

 

No, I haven't yet tried Chrome. Something happened about a year ago to start this problem. Something on my computer is causing this on whatever browser I'm using.
Is there a way to bypass all the programs on the computer and maybe turn them on one at a time to locate the problem.....would starting in safe mode work that way?

 

Nothing strange that I saw in the startup tab. Is it possible that AVG antivirus Free Edition may be interfering with reCaptcha? I know it doesn't play well with some other antivirus programs.

 

Only AVG Antivirus Free Edition. I had this on Windows XP and liked it. When I went to Windows 7 there was a different program already installed that I didn't particularly care for so I disabled it and installed AVG. That's when I discovered disabling the other antivirus program wasn't enough. It had to be deleted from the computer altogether. I don't remember now what the other program was. Anyway, the trouble with reCaptcha didn't start until some time later.

 

Of course , you could ensure all AVG files are uninstalled/deleted by using the removal tool, and your other program might work, or, need re-installing.
http://www.majorgeeks.com/files/details/avg_remover.html

 

I apologize for not getting back sooner. I'm going to try Chrome but it may take awhile. I have to use a slow dial up internet connection to download it. I'll let you know.

 

Yes, it still exists and I still have to use it.....but that's another long story. I have tried and failed several times to download Chrome. The closest I got was seven hours before it stalled.....again....so no Chrome. Any more ideas to find out what could be causing reCaptcha to keep failing or better yet a program to bypass it?

 

Thanks, I'll try that. It may be a couple of weeks. I don't get to town often.

 

I got lucky and was able to get a copy of Chrome from a laptop downloaded to a thumb drive. I came back to my computer and booted Chrome up from the thumb drive. The reCaptcha problem still persisted in Chrome just like in IE and Firefox. I even temporarily disabled AVG just in case one of the virus definition updates was causing the problem.
Any more ideas?

 

https://www.pineconeresearch.com/index.asp
The above website is the main one that I'm having trouble with. Not all sites protected by reCaptcha are giving trouble but I can't think of any at the moment that work for me. The above site keeps telling me to upgrade to a supported browser even though I've tried multiple versions of different browsers. I'll try to send a shot of the reCaptcha notice. How exactly would I try "safe mode"?
https://www.pineconeresearch.com/index.asphttps://www.google.com/recaptcha/api2/demo

 

Please explain step number 5. I clicked Restart with Add-ons disabled but then there was no Continue in Safe Mode in the help menu. I tried to get into one website with the reCaptcha issue while at this point with the same result. Was I in Safe Mode then?

 

Are you sure you did not install any adblockers for firefox.Some Adblockers will mess with Captcha.

Look here
https://forum.kaspersky.com/index.php?/topic/368273-i-am-not-robot-captcha/

Possibly a virus related issue,

 

No Adblockers installed. Issue exists in several browsers, not just Firefox.

 

Yes but it gave me the same results.
Today, I finally managed to get into one of the websites that has been giving me fits for months. I used IE and kept getting a notification that reCAPTCHA could not be contacted and for me to check my internet connection and try again. After repeated tries it went through. I had a internet connection the whole time in spite of the notification. I am now almost sure this whole issue is closely related to my very slow internet connection....24 kbps on an average day. I do know today's technology is geared to a much, much faster speed. Most things others take for granted are out of my reach.
Anyway, thanks for all the ideas you've given me to try. I think you went above and beyond, so to speak. I have learned some things I didn't know....at least what doesn't work.
I'd like to leave this thread open so I can update it at a later time as things change. Again, thanks.