Had your parents not been computer literate, like Bob, I would have suggested a Chromebook or Chromebox, on the basis that it takes care of itself with updates, security and the like, better than Windows, though for best results, it does need to be online.
But since they are computer literate, , albeit, your mother may be a bit rusty but it will come back fairly easily, your challenge, if they keep the laptop, is to make it look like the machine that died. Get a bright, fairly big LED flat monitor, a USB keyboard and mouse and set the laptop so that after power up, they can just shut the lid and use the separate Keyboard, mouse and monitor.
Depending what OS they had on the machine that died, if it was some version of Windows, download ClassicShell (free) and install it on top of (presumably) Windows 10 on the laptop, Essentially, it replaces the GUI and you can set it to look like Windows XP 7 or whatever, just as they had before.
Alternatively, you could sell the laptop and buy a traditional desktop and set it up the same way. Basically, restore the familiarity they are comfortable with. Wireless printers usually have a USB connection also if they prefer that but it should make no difference when they go to the print menu, once it's set up.
Good luck helping your parents back to connected world.