Ok. Login to Plesk. When I login to Plesk I end up on a page with a few buttons at the top and my domain listed at the bottom. Click the domain and find the database button. It looks like two stacks of poker chips, at least on the version I’m using. Click the database button. You should get a listing of available servers, probably only on labeled something like ‘Local MySql Server’. Click the Server. Now, hopefully, you will see a button labeled ‘DB WebAdmin’. It looks like a single stack of poker chips with a wrench next to it. Click the Button. Hopefully you’ll get a window with phpMyAdmin running in it. If you do, click on the database name and on the various tables and look around for errors. phpMyAdmin will tell you if you have damaged tables. Be careful though and don’t click anything that looks like a big red X. If you get any messages about ‘dropping’ or ‘truncating’ anything, do not say OK. ‘Drop’ and ‘Truncate’ basically mean ‘Delete’ and it is permanent.
Once you get into phpMyAdmin. I’d recommend backing up everything before doing anything else. Click the database name and look across the row of tabs to ‘Export’. Click it. Select everything (the list of tables) under ‘Export’ with the SQL radio box selected. Click ‘Save as File’. Click ‘Go’. Save the file. Open the file with a text editor like Notepad and make sure it has stuff in it. Close the file. Now you have a second backup.