Yeah it's not a seperate keyboard. Its the laptop keyboard. Right now it is working fine. It's just that when i lock screen and try to log back on, the alphnumeric keys don't work. Other keys do work however, such as caps lock, weird symbols. and if i restart, they work again.
Sounds like a windows problem, and one that will probably be difficult to diagnose. I did a quick Google search and didn't find anything, so that means it's not a problem with a large user base.
Go into device manager, try uninstalling the keyboard and let Windows reinstall it - see if that works.
Your only other alternative is to reinstall windows.