hi all. just got my new monitor today asus VE278Q which has a hdmi slot in it. ive got HIS HD 5770 1GB GDDR5 DVI HDMI Display graphics card and windows 7. the problem i have is when i connect the monitor up with a hdmi cable the monitor doesnt come on but it does when its connected with a VGA cable. any idea what setting i need to change? thanx