They are held in a single file called places.sqlite. Do a search for this file and save it somewhere on a regular occasion. Passwords are in logins.json but they are encrypted so not much use if you are transferring to a new PC.

If you are absolutely desperate to get a Dell XPS back up and running you could place it into a cold area like outdoors or a fridge/freezer for a short time. This sometimes allows it to boot.

Where are Sage bank feeds kept? In a file called sqlite3 - if you have issues with bank feeds you can ask Sage support to take a look at this file.

https://www.microsoft.com/en-us/download/details.aspx?id=44989

Upgrading from PHP 5.0 to PHP 7.0 means you need to make some changes to your code:

As per usual, the stupid hackers are running bots over the internet to find and attack WordPress sites, which of course make up around 30% of all websites!

Try using Webador to create a new website.