MSI Z97 Gaming 7 LGA 1150 Problem with LED-HDMI

I have encountered a problem and i'm not sure what to do. I have turned on my pc and the hdd led is blinking blue.
And the Monitor HDMI has no signal.
Here are all my specs:
Sony Optiarc AD-7260S-0B 24x DVDRW Drive - 24x, S-ATA, Black, OEM,
Seagate ST3...