Windows 10: Cannot activate Windows despite having it for over 3 years

So I had purchased my computer from someone on craigslist about 3 years ago, I was not provided with an activation key so that's out of the question unfortunately. All of the sudden a watermark telling to activate Windows had appeared in my lower right corner. When I attempt to troubleshoot it just tells me to make sure I'm connected to the internet, which I am. Apparently my computer is unable to connect to my organizations activation server. The error code in question is 0x8007232B.

:)

 

Regions speech not available despite correct language pack install

The issue still remains unresolved, as English (Australia) simply does not show up in the list despite following all suggested steps to date (which I had done previously)

 

Windows Vista Activation

I have 4 sytems in my home running vista(1 ult.-3 prem).The ultimate & 1 premium took SP1
wthout a hitch.1 premium required re-activation?,The other premium did not list SP1 in windows up-date,So i manually installed it without any re-activation required.
Also have to add that SP1 has increased performance in every comp.The ultimate machine actually got a 1,100 point increase in 3d 06 without any other changes at all.

 

Windows activation . . .

In the Windows activation status page is it still showing as activated, or do you have something like 3 days to do it in?