A customer brought in an hp Pavilion dv7-1245dx running windows vista and the issue is that when they start it up nothing will come on the screen for at least 15 minutes or so and then it will boot into windows fine and run fine. I removed the keyboard, hard drive, wifi card to see if that would make a difference but it is still the same. I did a bios update but that doesn't seem to help either. I also changed out the memory sticks. Nothing seems to help. I have not taken the MB out of the laptop yet. Can someone help me with this?