My computer boots up, but the monitors have no picture. There used to be about a five second delay between the second you pushed the power button and the second you hear the fan turned on. Now the fan starts up right away. Don't know if that has any significance. It's been doing this for a while. Sometimes after you wait for about a day it will turn on before freezing up for a while. No hardware changes. Tried a different power supply and swapping out the memory. Nothing changes the result.

"My computer boots up, but the monitors have no picture" How do you determine that your PC is booting up? Do you get the usual POST beep and a normal Windows startup audio play? When you use the plural term "monitors" are you implying you have a graphics card with dual output and have more than one monitor connected? Emachines are notorious for failures of their cheap low spec powersupplies. You say you tried with a different PSU. Was it a known good unit of higher rated output than the original? If you take out the ram and try booting do you get any BIOS beep errors? You may have a failure in any of PSU, CPU, graphics card, Motherboard. Disconnect all other devices including drives and any other PCI cards as well as any USB devices. That eliminates those as possible sources of the problem. Leave only Powersupply, Motherboard, CPU with HSF, Graphics, 1 stick of RAM, PS/2 keyboard. Will it boot? Do you get any BIOS beeps? Take out the graphics card and try booting. Any Beeps? Take out all ram and try booting. Any Beeps? If you get no beeps in any configuration then you may have a CPU failure. Fans will run regardless of a working CPU. Goin' Fishin' (Some day)

Excellent advice from Richard. Except I might suspect the motherboard more then the CPU in the final sentences.

"Monitors" was a typo. I only have one monitor. When I say boot up, the computer's power on light turns on and the fans start to work. The power supply that I tried was from a Medion PC, about a five year old working computer. No beeps or Windows sound effects on startup. No beeps or anything even when I remove the RAM. It looks like on my computer everything is integrated into the motherboard and there are no removable cards other than the modem. Thanks for the help.

your graphics from either your card or intergrated on your mainbd is not comunicating with your monitor try reseating the card or cable if still same either replace the card or mainbd

I have the same problem. I think my comp just needs to be put down. I can't figure out what is wrong with.. all I know is it sounds just like what is wrong with yours. Fans, lights, everything starts to sound and run properly- yet it is not functioning with the monitor. Mine is a laptop, is yours?

No. Mine is a desktop. All the people I've talked to says it's a problem with the motherboard. That's sounds semi-easy to change out on a desktop. A laptop would probably be a challenge to replace.