Missing passwords

[pigafetta]

First let me begin by pre-empting any wrong category issues by apologising this is my first effort on a Virgin forum. My problem started just days ago while using the Chrome browser on opening my Gmail account I was informed of a sync data issue and would therefore have to enter my email address & password, going into saved passwords via the settings menu I realised all saved passwords were gone. I have tried both the default and custom settings in the Sync dialogue without success. In desperation I followed this by trying 'Update & Recovery' I chose the 'Refresh' option which I believe is similar to a partial format, wanting to leave the 'Documents' folder containing 'AVI's, MP3's & JPEG's untouched I excluded this folder from the refresh alas, on launching chrome the 'customise & control' icon was coloured orange indicating that I still had sync issue's. and still refuses to save passwords is it possible that the 'Documents' folder being the only folder to avoid the refresh contains corrupt data? I had about fifty passwords half of them very important, if anyone can help I would be so grateful. I am using Chrome 39 & Windows 8.1 Thankyou.