Please Help. Everything boots but nothing on screen

I just compiled a pc together for my folks. The specs are:

Gigabyte GA-m68mt-s2 motherboard
4GB DDR3 RAM

500GB hard drive

585 watt power supply

I have everything plugged properly. I can see the fans working (the CPU heatsink, the the 190 mm fans , PSU fans), the disc drive I installed works. I can't really tell if the HDD is working, but I just cannot see anything on my monitor. Suggestions? Oh, by the way, I do meet the minimum 500watt requirement to run this mobo.

I just compiled a pc together for my folks. The specs are:

Gigabyte GA-m68mt-s2 motherboard
4GB DDR3 RAM

500GB hard drive

585 watt power supply

I have everything plugged properly. I can see the fans working (the CPU heatsink, the the 190 mm fans , PSU fans), the disc drive I installed works. I can't really tell if the HDD is working, but I just cannot see anything on my monitor. Suggestions? Oh, by the way, I do meet the minimum 500watt requirement to run this mobo.

KGB32