Toshiba Satellite M500. Suspend and hibernate don't work (blank screen).

Laptop specs:
Intel® Core™ i3-330M Processor 2.13 GHz, 3MB L3 Cache, 1066MHz DDR3, 4GB DDR3 1066MHz SDRAM (2048MBx2), 250GB HDD (5400rpm, Serial-ATA), Intel® Graphics Media Accelerator HD.

I am not sure what other information to post about this issue. Any suggestions?