Windows 7 is quite similar to Vista, so a PC with that OS should be fine for your Mum.
This one form ebuyer should be suitable. It has decent reviews too:
This Dell at Argos also has Windows 7:
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This poetic animation about monsters is illustrated in a Van Gogh painterly style
Apple predictions 2017
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.