I tried deleting the blockchain, after downloading it again it was still not working, same blank white screen
 
I renamed the Neos-2.1 folder in %AppData% to OLD_Neos-2.1, rebooted and re-installed the Neos wallet.

The wallet works fine now but when I copied the wallet.dat file over from \AppData\Roaming\Neos-2.1\neos-data it says the wallet is empty?

I didn't delete but renamed the original Neos-2.1 folder so I do still have all the original files?

Any ideas on how to get the coins back? Should I be using the wallet.dat file from C:\Program Files (x86)\Neos\neos-data ?

Thanks for any help