Can't install OS Sierra in Recovery Mode

[kaplaninternational]

I'm trying to reinstall MacOS Sierra, from the Recovery Mode screen

When I press continue - I get the dialog "To download and restore, your computer eligability with Apple etc" message

I press continue

And then noting happens. It just goes back to the same screen where I press continue to get this dialog

 

[kaplaninternational]

Is it because I have my startup disk running OS as the external drive which is a really basic one so everything is really slow? Something weird is going on

All I am trying to do is reset my Mac to factory settings, its taking ages to figure this out

 

[Fishrrman]

It sure helps if you tell us which Mac you have and what year it was made.

Having said that, can you boot to internet recovery:
"command-OPTION-R"
???

If you can, what version of the OS does it offer to install?