so i have an older model emachine. just recently when i go to start the computer the emachine logo appears and then another screen which i'm guessing is the BIOS appears and then after that the computer screen goes completely black. i can pull up the safe mode menu but the computer won't start in safe mode or the last known configuration that worked, the screen just goes black again. i have already removed the battery in the motherboard, let it sit out, and then replaced it. i have also checked to make sure the fans are running, which they are. so i need help with this one....any suggestions??