Question about Computers & Internet
That message is telling you the monitor has power and is connected to the computer, but that there's no video coming in. This means that either the computer's never starting up, or there is a problem with the computer's video card.
Do you know for sure that the computer is actually starting up? The power may be coming on, but nothing is going beyond that. Check any jumpers on your motherboard to be sure they are in the proper places. Most boards don't have any, but yours might be different. There is often a "clear CMOS" jumper near the backup battery on the motherboard. Some boards ship with the jumper in the "clear" position, and this can prevent the system from starting.
Make sure you have both power supply connectors plugged firmly into the motherboard. There are two: the 20- or 24-pin main power connector and a 4-pin connector for processor power. Then install only the memory, processor and cooling fan. If your motherboard doesn't have integrated video, plug in the video card as well. Don't install any other cards or the cables connecting hard disks and optical drives. You want to see if the system will start with the minimum hardware.
If your computer starts up and displays video with the minimum hardware installed, put everything else back together and try it again. If everything is normal, you may just have had a loose power supply connection. If you're back to a no-boot condition, one of the other parts is causing the trouble. You'll be able to isolate which is the culprit by removing one piece at a time, then restarting the computer. When you disconnect the bad part the problem will clear up, and you'll know what you need to replace.
If your computer continues not to start up with only the minimum hardware connected, you have a bad power supply, motherboard or processor. You'll need to figure out by parts substitution which one it is.
It can be a frustrating process, but you'll get the computer going. Good luck, and thanks for using Fixya!
Posted on Oct 01, 2010
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Posted on Jan 02, 2017
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