website defaults to https and doesn't load (no replies)

I have 3 http websites running ok on WAMP so no problems there.
I have to restore a live Joomla https website to WAMP. The restore runs fine. But unfortunately the restored site does not run just a blank screen with a https url.
The php and mysql versions are compatible.
What changes do I need to make to allow the site to run at http?

Thanks for any advice.