Hi, I just built my first PC. But when I try to boot it it goes past the bios splashscreen and then just has a flashing underscore/dash in the top left hand corner of the screen. Here are the specifications. I brought it to the place where I got the parts for a rebuild and QC but they don't know what the problem is either. Also I got the DVD drive and harddrive from my friend so they could be the problem. Specifications: Asus P5Q SE Plus MotherBoard Antec 900 two case GTX 260 Core 216 GameXStream 700W PSU Intel Core 2 Duo E7500 4GB DDR2 Ram Also there is no OS installed as It wont boot. I have copies of windows XP(CD) and windows 7. Also I have tried 3 different CD/DVD drives and no luck.