Display not responding after resume from sleep

[rah101]

Hello, I am new on Techspot and this is my first post.
Recently, about 3-4 days ago I would put my laptop to sleep and when time to resume the display is blank. However the hdd is running, fan is running fine and hardware light is blink. The screen is blank as if the computer is off and the LCD screen is not lit black. Please help me as I am heavy on the sleep function.
Thank you in advance!

 

[CAMusing]

What operating system are you using?
Manufacturer and model number of laptop would be helpful too.

 

[rah101]

I am running Windows Vista Ultimate 32bit.
Acer Ferrari 5000 Notebook. AMD processor 2.00Gh dual core
ATI graphics X1600 Mobility Radeon with external graphics card port, 256MB integrated.
All the help is appreciated.