原帖由： Brian Blake ,
Couple things to consider: # Is your monitor turned on? # Is your monitor on the correct input? Not all monitors automatically select an incoming signal. # Are you using integrated video, or an add-on video card? Some motherboards require a first boot to be with the integrated video first to select a default video source in the BIOS. # Is the CPU properly seated in its socket? # If you didn't take proper precautions when installing the CPU, static might have damaged it. # Check the CPU for damaged or bent pins. # You could have damaged the CPU when installing the heatsink/fan assembly. # Could be a defective motherboard or CPU. # Are all the proper power supply connectors plugged into the right places on the motherboard? Any of the above, in most motherboards, can give you a blank screen at power on. As @jayeff said, having the speaker to at least get audible post codes would certainly help.