Signal went off while playing a game. tried monitor on another machine & it works fine. fans all run, sounds like every thing is running, computer turns on and off by the power button, but no signal to the monitor. what has happened to it?
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No signal means that there is no communication between the computer and the monitor. Check to make sure that the cables that goes into the computer is in snuggly and also that the cables that go into the monitor are in snuggly. If the computer sounds like it is working properly (lights on, you hear fans blowing and hard drive spinning) then your problem is either that the monitor is bad or the VGA (Video) Card inside the computer is bad. If you have access to another monitor try plugging it into the computer, if it works you know that your other monitor is bad. If it does not work your Video card needs to be replaced. Get a quote then try these guys at: http://www.generalsystemsconsulting.com
Here is what you do, it is for unfreezing the bios. Open your computer and look for the bios clock battery it will be silver and the exact roundness as a nickle. you will be able to remove it rather easily the number should be CR2025 on the battery. you can buy these from most stores actually, radio shack, walgreen's. walmart, ect. before you leave for the store unplug your computer and hold the power button for 15 seconds, " this clears the power " leave it unplugged until you have a new battery, Once you have a new battery install it with the + facing in the open and the unlabeled side facing down into the slot. plug your computer back in and boot, it may cycle through the Bios restart once, from there it will restart again and you should be good to go.
Have you tried a different Graphics Card, looks to me like the onboard graphics card is at fault, there should be an AGP slot or PCI slot that you can plug a new Graphics card into then you should be fine...
Try using another monitor that you know works. Then try another video card. The fans are running because the computer is running ---but the monitor is not. Green to Amber means monitor is not on.
A lot can go wrong with loose wires that shouldn't be loose.
But I would try this first.