Hi, I started my laptop as normal and opened Thunderbird to check emails which was fine. In the middle of checking emails the laptop just switched off unexpectedly (still don't know why). I restarted the laptop and was prompted to do a disk check which I did then it booted up fine. I started Thunderbird again but it came up as setting up a new account not recognizing my existing profile accounts which are multiple. I've spent hours searching for a solution, which led me to the prefs.js issue. I followed some instructions to rename the prefs-1.js file which I did and it partially worked but not to my original settings and all accounts. I then copied and renamed an older backup version of the prefs.js file which also worked but then included accounts I didn't have anymore. I'm trying to get back my original prefs.js settings but don't know how to or if it's possible at all.

Thank you in advance.