Left side of keyboard working incorrectly

Hello,

The left hand side of my keyboard works, but when I press A for example on screen I get AS as though I've pressed two keys at the same time, this does it for most of the left hand side of my keyboard - after I stupidly cleaned it without turning the keyboard off.

The right hand side works perfectly fine, it's just past the c, d and e part of the keyboard.

I'm currently using a fuji siemens desktop and google chrome

Help!