Answer by
brilliance (54)
Improperly installed hardware, such as wires placed in the wrong plugs, incorrectly-set motherboard prongs, poorly-set cards, or an overly-hot CPU, a broken power supply, incorrect BIOS settings, or mechanical, or electrical problems in the computer hardware, or a short in the hardware. You may need to reinstall things such as DRAM or CPU, as the computer may not acknowledge these.