99 error code with my new pc

Hello! I need a little help. I got my first pc and built it yesterday and when i started up my pc, on my motherboard there is a 99 code and a dot of red light. I looked at the motherboard manual and the red dot indicates that something is wrong with the vga. Althought the american megatrends is on my screen. On my screen, it says that: press del to enter setup, but even tho i press it, nothing happens. Pls help :)