G-Mail suddenly not working

My Gmail is suddenly not working. It says go to Gmail Help Center but after I did I did not know what to do. So I thought I would post.
I do not know what to do about this. Says to visit the GMAIL HELP CENTER but that was no help. Any suggestions?? I visited site a few times but did not know what to do. Worked fine up to now.

 

The Windows 7 will not work but it did up to earlier today. The Windows 10 DOES work. I do not know what to do. Never happened before. Never had any prior trouble with Gmail working. Now it says Visit the Gmail Help Center evry time I try to open it. But I find that no help.

 

Is anyone else having trouble with Gmail with windows 7 laptops or computers? Never had ANY before today. Do not know what to do.

 

I found THIS:

"However, Google recently announced that it would no longer support Windows 7 or 8.1 operating systems (OS) in 2023. This leaves users who still use these versions of Windows without access to important updates and security patches."

 

What can I do to fix this?? See screen shot I get when try to open Gmai.

 

How can I get another email account? I used to use Operamail.

 

I am seeking a new free email program to replace Google Gmail which somehow quit working. Any suggestions? Tried Opera but it did not download for me. Need advice.

I USED to use Opera Browser and Operamail. Is it still free and how do I get it if so? Maybe I should change since Google not working for me?

 

Maybe the email does not work because it is not supposed to work on Windows 7. I tried to download the operamail and none would work for me. aI have no interest in buying another computer and trying to learn how to work it. .

 

Now it says I have Inbox(5) that I cannot access. Cannot see below Compose. This takes up whole screen. Also something that says RdrServicesUpdater2_x86exe has stopped working appears on desktop(see file upload).

 

What do I do about it ? I recall downloading a new adobe acrobat reader and installing it but do not ecall USING it. It seems to be installed though for it is listed in the START menu as Acrobat Reader. I downloaded it from here: https://get.adobe.com/reader/

 

Do I remove the one that is there or just re-install? I could just download it again and install it again or maybe uninstall the first one?
Aew weeks ago a Verizon tech was here installing obsolete equipment and I wondered if he did something to the connections but then the PC and gmail worked fine after he had left. I did not mess around with the connections as I recall.

 

Look at my Post #6 above. It shows a screen shot of my computer screen after clicking to open G-mail. At first I thought the Verizon tech made a mistake in connectios when replaced old TV equipment but then I realized my computer did not start acting up until a week or two later. The other windows 10 ASUS works fine with Gmail. My DELL always HAS but suddenly stopped connecting to Gmail several days ago. I was thinking of going back to Operamail or at least something different. I do not have "connections knowledge" so have not tried looking at the cables.

 

I tried the verification instructions. Did not work for I could not receve text messages. Felt it was pointless so I quit. No idea what is wrong with gmail. Always worked perfectly.

 

I went through some diagnostics and it says for some reason my recovery phone number is messed up. I did not know what to do. It wanted to send me a text code but I cannot receive text phone calls that I know of. So I closed window.