my pointer is not moving

I have a Macbook Air 11"

Processor and memory

1.4GHz Intel Core 2 Duo processor with 3MB on-chip shared L2 cache; or optional 1.6GHz Intel Core 2 Duo processor with 3MB shared L2 cache

• 800MHz frontside bus
• 2GB of 1066MHz DDR3 SDRAM onboard (4GB maximum)

Storage2

• Flash Storage

  64GB

• Flash Storage

  128GB

It was all ok till evening and now when i tried to start up my mac the pointer is stuck at the left corner and is not moving and no motion on the pad please suggest