I had to re sync my photos library with the cloud that was on an external drive, that takes a lot of time. It is not something I would have done had my computer not been a mare. All my cloud stuff needed to be re signed in, all my settings and prefs were gone, software needed to be re downloaded, I am on unlimited broad band so not an issue, just time to sort out.
Again, if my puter was working OK, I would not have done it.