I just followed what James Huff had mentioned above.
Download the latest WordPress v4.3 from the www.remarpro.com, unzip it. Then login to GoDaddy. Go to the File manager > httpdocs folder. Create a folder called “Old”. Move all the existing wordpress files to “old” folder except the wp-config.php file and the /wp-content/ directory. Now upload all the manually downloaded wordpress files to httpdocs folder. Check if your website is back to normal. Then you can safely remove Old folder.
For me, it may be the Automatic update setting that caused the issue. Auto Update broke and didn’t complete.
Hope this helps.
