How to exit Standby

I have inspiron 1300 laptop with windows xp home.

 

I have never had to use this facility until a short while ago. I went into standby mode by turning off and chosing standby. To exit I pressed the power button, my desktop came back on but with no icons and no task and start button. My mouse arrow was on screen but frozen, I waited a little while but nothing else happened, no keys would work and mouse still frozen.

 

How do I exit standby?

 

Had a look in the manual which referred to the power options and advance tab, I have it set to go into standby by closing the laptop, but I get the same effect when opening. Can anyone help please.