Cannot logon!!!!!!!! numlock??

I'm using Symantec Encryption Desktop on a Windows 8.2 laptop... It appears I cannot logon past the Passphrase as the software is apparently expecting Numlock to be on, but I have no capability of turning it on or off as it is not an option on my Sony Vaio Laptop.

Soooo frustrating...  Encryption has been running on my laptop for 6 months no problem, yet now I get I problem!  Not sure if there have been any upgrades?

I like things secure, but this really puts me off using Symantec products if I can't access my own data...